diff --git a/apps/desktop/src/api/client.ts b/apps/desktop/src/api/client.ts
index 3b7e4ed9c9..d8e694055c 100644
--- a/apps/desktop/src/api/client.ts
+++ b/apps/desktop/src/api/client.ts
@@ -72,6 +72,23 @@ export function profileScoped(profile?: null | string): { priority?: 'foreground
   }
 }
 
+/** A session's OWNER as a request scope: a profile belongs to ONE gateway, so
+ *  a Bot on another connection is (its connection, its profile) — never the
+ *  active connection with the Bot's profile name. Missing halves fall back to
+ *  the ambient scope; an explicit connection — `'local'` included — overrides
+ *  the ambient tag `hermesApi` spreads underneath (as capabilityScoped does). */
+export interface OwnerScope {
+  connectionId?: null | string
+  profile?: null | string
+}
+
+export function ownerScoped(owner?: OwnerScope): { connectionId?: string; priority?: 'foreground'; profile?: string } {
+  return {
+    ...profileScoped(owner?.profile || undefined),
+    ...(owner?.connectionId ? { connectionId: owner.connectionId } : {})
+  }
+}
+
 /** Profile that profile-scoped REST/WS calls should target (null → primary).
  *  Read-only twin of setApiRequestProfile for modules (e.g. voice playback)
  *  that build their own connection URLs and must stay on the same backend. */
diff --git a/apps/desktop/src/api/system.ts b/apps/desktop/src/api/system.ts
index 4d70299675..3e7675eac3 100644
--- a/apps/desktop/src/api/system.ts
+++ b/apps/desktop/src/api/system.ts
@@ -13,7 +13,7 @@ import type {
   MemoryStatusResponse
 } from '@/types/hermes'
 
-import { capabilityScoped, hermesApi, type ProfileScope, profileScoped } from './client'
+import { capabilityScoped, hermesApi, type OwnerScope, ownerScoped, type ProfileScope, profileScoped } from './client'
 
 export const AUDIO_SPEAK_MIN_REQUEST_TIMEOUT_MS = 180_000
 export const AUDIO_SPEAK_MAX_REQUEST_TIMEOUT_MS = 600_000
@@ -184,11 +184,11 @@ export function transcribeAudio(dataUrl: string, mimeType?: string): Promise<Aud
   })
 }
 
-// `profile` = the speaking session's owner profile (a Bot's own TTS voice);
-// omitted → the active profile.
-export function speakText(text: string, profile?: null | string): Promise<AudioSpeakResponse> {
+// `owner` = the speaking session's (connection, profile) — a Bot's own TTS
+// voice on its own gateway; omitted halves → the active scope.
+export function speakText(text: string, owner?: OwnerScope): Promise<AudioSpeakResponse> {
   return hermesApi<AudioSpeakResponse>({
-    ...profileScoped(profile || undefined),
+    ...ownerScoped(owner),
     path: '/api/audio/speak',
     method: 'POST',
     body: { text },
diff --git a/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.owner.test.tsx b/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.owner.test.tsx
new file mode 100644
index 0000000000..41195c844d
--- /dev/null
+++ b/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.owner.test.tsx
@@ -0,0 +1,84 @@
+import { cleanup, renderHook } from '@testing-library/react'
+import { atom } from 'nanostores'
+import type { ReactNode } from 'react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+
+import { setApiRequestConnection, setApiRequestProfile } from '@/hermes'
+import { clearVoiceClientConfigCache } from '@/lib/voice-client-direct'
+import { $autoSpeakReplies } from '@/store/voice-prefs'
+
+import { ComposerScopeProvider, MAIN_COMPOSER_SCOPE } from '../scope'
+
+import { useAutoSpeakReplies } from './use-auto-speak-replies'
+
+vi.mock('@/store/ambient', () => ({ ownsAmbientCue: async () => true }))
+vi.mock('@/store/notifications', () => ({ notifyError: vi.fn() }))
+
+// A Bot chat is owned by (its connection, its profile). The production path —
+// the auto-speak hook reading its composer scope, through playSpeechText's
+// ladder, down to the REST audio calls — must carry that owner, or the Bot
+// speaks with the active profile's voice on the active gateway (#100864).
+describe('useAutoSpeakReplies — owner-routed synthesis', () => {
+  afterEach(() => {
+    cleanup()
+    $autoSpeakReplies.set(false)
+    setApiRequestConnection(null)
+    setApiRequestProfile(null)
+    clearVoiceClientConfigCache()
+    Reflect.deleteProperty(window, 'hermesDesktop')
+  })
+
+  it('synthesizes a Bot reply with the scope owner (connection, profile), not the active scope', async () => {
+    const api = vi.fn(async ({ path }: { path: string }) =>
+      path.startsWith('/api/audio/voice-config') ? { ok: false } : { audio: '' }
+    )
+
+    Object.defineProperty(window, 'hermesDesktop', { configurable: true, value: { api } })
+    setApiRequestConnection('gw-active')
+    setApiRequestProfile('research')
+    $autoSpeakReplies.set(true)
+
+    const $messages = atom<never[]>([])
+    let reply: null | { id: string; pending: boolean; text: string } = null
+
+    const wrapper = ({ children }: { children: ReactNode }) => (
+      <ComposerScopeProvider
+        value={{ ...MAIN_COMPOSER_SCOPE, $messages, connectionId: 'gw-bots', profile: 'bot-adam', target: 'tile:bot' }}
+      >
+        {children}
+      </ComposerScopeProvider>
+    )
+
+    renderHook(
+      () =>
+        useAutoSpeakReplies({
+          conversationActive: false,
+          failureLabel: 'failed',
+          markSpoken: () => {
+            reply = null
+          },
+          pendingReply: () => reply,
+          sessionId: 'bot-session'
+        }),
+      { wrapper }
+    )
+
+    reply = { id: 'm1', pending: false, text: 'Hello from Adam.' }
+    $messages.set([])
+
+    await vi.waitFor(() =>
+      expect(api.mock.calls.map(([request]) => (request as { path: string }).path)).toContain('/api/audio/speak')
+    )
+
+    const scopes = new Set(
+      api.mock.calls.map(([request]) => {
+        const { connectionId, profile } = request as { connectionId?: string; profile?: string }
+
+        return `${connectionId}::${profile}`
+      })
+    )
+
+    // voice-config AND the speak POST — every leg names the Bot's owner.
+    expect(scopes).toEqual(new Set(['gw-bots::bot-adam']))
+  })
+})
diff --git a/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.ts b/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.ts
index cee46bae5f..f2873a5f55 100644
--- a/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.ts
+++ b/apps/desktop/src/app/chat/composer/hooks/use-auto-speak-replies.ts
@@ -43,9 +43,9 @@ export function useAutoSpeakReplies({
   const enabled = useStore($autoSpeakReplies)
   // Wake on THIS composer's transcript: a tile subscribed to the primary's
   // would never fire on its own replies (and would fire on someone else's).
-  const { $messages, profile } = useComposerScope()
-  const latest = useRef({ conversationActive, failureLabel, markSpoken, pendingReply, profile })
-  latest.current = { conversationActive, failureLabel, markSpoken, pendingReply, profile }
+  const { $messages, connectionId, profile } = useComposerScope()
+  const latest = useRef({ connectionId, conversationActive, failureLabel, markSpoken, pendingReply, profile })
+  latest.current = { connectionId, conversationActive, failureLabel, markSpoken, pendingReply, profile }
 
   useEffect(() => {
     if (!enabled) {
@@ -57,7 +57,7 @@ export function useAutoSpeakReplies({
     latest.current.markSpoken()
 
     const speakLatest = () => {
-      const { conversationActive, failureLabel, markSpoken, pendingReply, profile } = latest.current
+      const { connectionId, conversationActive, failureLabel, markSpoken, pendingReply, profile } = latest.current
 
       if (conversationActive || $voicePlayback.get().status !== 'idle') {
         return
@@ -75,8 +75,8 @@ export function useAutoSpeakReplies({
       // ran in every window, so peers just stay quiet.
       void ownsAmbientCue(`speak:${reply.id}`).then(owns => {
         if (owns) {
-          void playSpeechText(reply.text, { messageId: reply.id, profile, source: 'read-aloud' }).catch(error =>
-            notifyError(error, failureLabel)
+          void playSpeechText(reply.text, { connectionId, messageId: reply.id, profile, source: 'read-aloud' }).catch(
+            error => notifyError(error, failureLabel)
           )
         }
       })
diff --git a/apps/desktop/src/app/chat/composer/hooks/use-voice-conversation.ts b/apps/desktop/src/app/chat/composer/hooks/use-voice-conversation.ts
index 2f0df3abdb..762af46df0 100644
--- a/apps/desktop/src/app/chat/composer/hooks/use-voice-conversation.ts
+++ b/apps/desktop/src/app/chat/composer/hooks/use-voice-conversation.ts
@@ -62,11 +62,12 @@ export function useVoiceConversation({
   const { t } = useI18n()
   const voiceCopy = t.notifications.voice
   const { handle, level } = useMicRecorder(voiceCopy)
-  // The scope's session owner (a Bot's own profile) picks the TTS voice; a
-  // ref keeps the long-lived turn closures below reading the current value.
-  const { profile: ownerProfile } = useComposerScope()
-  const ownerProfileRef = useRef(ownerProfile)
-  ownerProfileRef.current = ownerProfile
+  // The scope's session owner (a Bot's own connection + profile) picks the TTS
+  // voice; a ref keeps the long-lived turn closures below reading the current
+  // value.
+  const { connectionId: ownerConnectionId, profile: ownerProfile } = useComposerScope()
+  const ownerRef = useRef({ connectionId: ownerConnectionId, profile: ownerProfile })
+  ownerRef.current = { connectionId: ownerConnectionId, profile: ownerProfile }
   const [status, setStatus] = useState<ConversationStatus>('idle')
   const [muted, setMuted] = useState(false)
   const turnTimeoutRef = useRef<number | null>(null)
@@ -466,10 +467,7 @@ export function useVoiceConversation({
         // this is a safety net for read-aloud-style entries into the loop.
         ensureBargeMonitor()
 
-        const playback = playSpeechText(response.text, {
-          profile: ownerProfileRef.current,
-          source: 'voice-conversation'
-        })
+        const playback = playSpeechText(response.text, { ...ownerRef.current, source: 'voice-conversation' })
         // playSpeechText performs its normal cleanup synchronously before
         // returning. Capture the sequence after that internal increment so
         // only a later, external stop suppresses the next listen cycle.
@@ -510,7 +508,7 @@ export function useVoiceConversation({
       ensureBargeMonitor()
 
       void (async () => {
-        const session = await startSpeechStream({ profile: ownerProfileRef.current, source: 'voice-conversation' })
+        const session = await startSpeechStream({ ...ownerRef.current, source: 'voice-conversation' })
 
         // The session may resolve after the loop moved on (barge, disable).
         if (responseIdRef.current !== responseId) {
diff --git a/apps/desktop/src/app/chat/composer/scope.tsx b/apps/desktop/src/app/chat/composer/scope.tsx
index ea77eacac5..85871fcf7b 100644
--- a/apps/desktop/src/app/chat/composer/scope.tsx
+++ b/apps/desktop/src/app/chat/composer/scope.tsx
@@ -27,6 +27,10 @@ export interface ComposerScope {
    *  keep streaming out of the composer's renders; subscribe only off-render
    *  (auto-speak) where the reply edge is the whole point. */
   $messages: ReadableAtom<ChatMessage[]>
+  /** Owner connection of this scope's session — a profile belongs to ONE
+   *  gateway, so voice playback mints against it (cross-connection Bots).
+   *  undefined → the active connection. */
+  connectionId?: null | string
   /** Owner profile of this scope's session (a Bot tile runs on the Bot's own
    *  profile). Voice playback synthesizes with it; undefined → active profile. */
   profile?: null | string
diff --git a/apps/desktop/src/app/chat/index.tsx b/apps/desktop/src/app/chat/index.tsx
index ca116f23c3..db35434632 100644
--- a/apps/desktop/src/app/chat/index.tsx
+++ b/apps/desktop/src/app/chat/index.tsx
@@ -60,7 +60,7 @@ import { ChatBar, ChatBarFallback } from './composer'
 import { FloatingComposerSurface } from './composer/floating-surface'
 import { requestComposerInsert } from './composer/focus'
 import { droppedFileInlineRefs } from './composer/inline-refs'
-import { ComposerSurfaceProvider, useComposerScope, useComposerSurfaceId } from './composer/scope'
+import { ComposerScopeProvider, ComposerSurfaceProvider, useComposerScope, useComposerSurfaceId } from './composer/scope'
 import type { ChatBarState } from './composer/types'
 import { useHistoryWindow } from './history-window'
 import { type DroppedFile, partitionDroppedFiles } from './hooks/use-composer-actions'
@@ -261,6 +261,20 @@ export function ChatRuntimeBoundary({
     ? { connectionId: ownerConnection, profile: ownerProfile }
     : undefined, [ownerConnection, ownerProfile])
 
+  // A Bot chat opened IN PLACE in the main pane (openStoredBotChat) keeps the
+  // active profile, so the ambient scope carries no owner. Publish the session
+  // owner hint's (connection, profile) here so voice playback speaks with the
+  // Bot's own voice; a tile's scope already names its owner and is kept as is.
+  const parentScope = useComposerScope()
+
+  const composerScope = useMemo(
+    () =>
+      parentScope.profile || !ownerProfile
+        ? parentScope
+        : { ...parentScope, connectionId: ownerConnection || undefined, profile: ownerProfile },
+    [ownerConnection, ownerProfile, parentScope]
+  )
+
   const history = useHistoryWindow({
     scopeKey: JSON.stringify([runtimeId, storedId, tailProfile, connectionId, activeProfile, suppressMessages]),
     storedId,
@@ -399,9 +413,11 @@ export function ChatRuntimeBoundary({
   })
 
   return (
-    <TranscriptWindowProvider value={transcriptWindow}>
-      <AssistantRuntimeProvider runtime={runtime}>{children}</AssistantRuntimeProvider>
-    </TranscriptWindowProvider>
+    <ComposerScopeProvider value={composerScope}>
+      <TranscriptWindowProvider value={transcriptWindow}>
+        <AssistantRuntimeProvider runtime={runtime}>{children}</AssistantRuntimeProvider>
+      </TranscriptWindowProvider>
+    </ComposerScopeProvider>
   )
 }
 
diff --git a/apps/desktop/src/app/chat/session-tile.tsx b/apps/desktop/src/app/chat/session-tile.tsx
index d05829774b..9dbd34c545 100644
--- a/apps/desktop/src/app/chat/session-tile.tsx
+++ b/apps/desktop/src/app/chat/session-tile.tsx
@@ -226,10 +226,19 @@ function TileChat({
       $awaitingInput: sessionAwaitingInput(runtimeId),
       $messages: view.$messages,
       attachments,
+      connectionId: ownerRoute?.connectionId || undefined,
       profile: ownerRoute?.targetProfile || ownerRoute?.profile || undefined,
       target: `tile:${storedSessionId}`
     }),
-    [attachments, ownerRoute?.profile, ownerRoute?.targetProfile, runtimeId, storedSessionId, view.$messages]
+    [
+      attachments,
+      ownerRoute?.connectionId,
+      ownerRoute?.profile,
+      ownerRoute?.targetProfile,
+      runtimeId,
+      storedSessionId,
+      view.$messages
+    ]
   )
 
   // Tile actions must keep the persisted owner route. The ambient gateway hook
diff --git a/apps/desktop/src/components/assistant-ui/thread/assistant-message.tsx b/apps/desktop/src/components/assistant-ui/thread/assistant-message.tsx
index d7d6ab54be..ab43854f54 100644
--- a/apps/desktop/src/components/assistant-ui/thread/assistant-message.tsx
+++ b/apps/desktop/src/components/assistant-ui/thread/assistant-message.tsx
@@ -710,6 +710,7 @@ const ScheduledRetryAction: FC<{ resetsAt: number }> = ({ resetsAt }) => {
       },
       Math.max(0, fireAt - Date.now())
     )
+
     const tick = window.setInterval(() => setNow(Date.now()), 1000)
 
     return () => {
@@ -1044,8 +1045,8 @@ const ReadAloudButton: FC<{ getText: () => string; messageId: string }> = ({ get
   const voicePlayback = useStore($voicePlayback)
   const view = useSessionView()
   const sessionId = useStore(view.$runtimeId)
-  // A Bot tile's session owns its own profile → its own TTS voice.
-  const { profile } = useComposerScope()
+  // A Bot chat's session owns its own (connection, profile) → its own TTS voice.
+  const { connectionId, profile } = useComposerScope()
 
   const readAloudStatus =
     voicePlayback.source === 'read-aloud' && voicePlayback.messageId === messageId ? voicePlayback.status : 'idle'
@@ -1064,12 +1065,12 @@ const ReadAloudButton: FC<{ getText: () => string; messageId: string }> = ({ get
     }
 
     try {
-      await playSpeechText(text, { messageId, profile, source: 'read-aloud' })
+      await playSpeechText(text, { connectionId, messageId, profile, source: 'read-aloud' })
       markAssistantIdSpoken(sessionId, view.$messages.get(), messageId)
     } catch (error) {
       notifyError(error, copy.readAloudFailed)
     }
-  }, [copy.readAloudFailed, getText, messageId, profile, sessionId, view.$messages])
+  }, [connectionId, copy.readAloudFailed, getText, messageId, profile, sessionId, view.$messages])
 
   return (
     <TooltipIconButton
diff --git a/apps/desktop/src/lib/voice-client-direct.test.ts b/apps/desktop/src/lib/voice-client-direct.test.ts
index f397043159..84ff1c80f1 100644
--- a/apps/desktop/src/lib/voice-client-direct.test.ts
+++ b/apps/desktop/src/lib/voice-client-direct.test.ts
@@ -77,21 +77,6 @@ describe('fetchVoiceClientConfig', () => {
     expect(api).toHaveBeenCalledTimes(2)
   })
 
-  // A Bot chat runs on the Bot's own profile: two Bots open beside the active
-  // profile must each fetch THEIR profile's TTS config, and a plain chat keeps
-  // the active-profile fallback (#100864).
-  it('resolves per-Bot TTS config by the owner profile, keeping the active-profile fallback', async () => {
-    const api = mockDesktopApi({ ok: true, stt: directStt, tts: relay })
-    setApiRequestProfile('research')
-
-    await fetchVoiceClientConfig('bot-rachel')
-    await fetchVoiceClientConfig('bot-adam')
-    await fetchVoiceClientConfig()
-
-    const profiles = api.mock.calls.map(([request]) => (request as { profile?: string }).profile)
-    expect(profiles).toEqual(['bot-rachel', 'bot-adam', 'research'])
-  })
-
   it('resolves null on an older backend without the endpoint', async () => {
     Object.defineProperty(window, 'hermesDesktop', {
       configurable: true,
diff --git a/apps/desktop/src/lib/voice-client-direct.ts b/apps/desktop/src/lib/voice-client-direct.ts
index 2c5b80636f..40da2e8c78 100644
--- a/apps/desktop/src/lib/voice-client-direct.ts
+++ b/apps/desktop/src/lib/voice-client-direct.ts
@@ -1,4 +1,4 @@
-import { profileScoped } from '@/api/client'
+import { type OwnerScope, ownerScoped } from '@/api/client'
 import { getApiRequestConnection, getApiRequestProfile, hermesApi } from '@/hermes'
 
 /**
@@ -70,10 +70,10 @@ const STT_REQUEST_TIMEOUT_MS = 60_000
 let cached: { key: string; at: number; config: VoiceClientConfig } | null = null
 let inflight: { key: string; promise: Promise<null | VoiceClientConfig> } | null = null
 
-// `profile` is the session OWNER's profile (a Bot chat runs on its own
-// profile with its own TTS voice); undefined/null → the active profile.
-function scopeKey(profile?: null | string): string {
-  return `${getApiRequestConnection() ?? 'local'}::${profile || getApiRequestProfile() || 'default'}`
+// `owner` is the speaking session's (connection, profile) — a Bot chat runs
+// on its own profile, on its own gateway; missing halves → the active scope.
+function scopeKey(owner?: OwnerScope): string {
+  return `${owner?.connectionId || getApiRequestConnection() || 'local'}::${owner?.profile || getApiRequestProfile() || 'default'}`
 }
 
 /** Drop cached credentials (used by tests; scope changes rotate the key). */
@@ -82,8 +82,8 @@ export function clearVoiceClientConfigCache(): void {
   inflight = null
 }
 
-export async function fetchVoiceClientConfig(profile?: null | string): Promise<null | VoiceClientConfig> {
-  const key = scopeKey(profile)
+export async function fetchVoiceClientConfig(owner?: OwnerScope): Promise<null | VoiceClientConfig> {
+  const key = scopeKey(owner)
 
   if (cached && cached.key === key && Date.now() - cached.at < CONFIG_TTL_MS) {
     return cached.config
@@ -99,7 +99,7 @@ export async function fetchVoiceClientConfig(profile?: null | string): Promise<n
       // profile — the same routing every relay audio call uses, so the
       // config comes from the backend the user is actually talking to.
       const response = await hermesApi<{ ok: boolean } & VoiceClientConfig>({
-        ...profileScoped(profile || undefined),
+        ...ownerScoped(owner),
         path: '/api/audio/voice-config'
       })
 
@@ -318,8 +318,8 @@ export async function transcribeAudioClientDirect(audio: Blob): Promise<null | s
 // ---------------------------------------------------------------------------
 
 /** Resolve the profile's TTS config when it is client-callable, else null. */
-export async function directTtsConfig(profile?: null | string): Promise<DirectTtsConfig | null> {
-  const config = await fetchVoiceClientConfig(profile)
+export async function directTtsConfig(owner?: OwnerScope): Promise<DirectTtsConfig | null> {
+  const config = await fetchVoiceClientConfig(owner)
 
   return config?.tts && config.tts.mode === 'direct' ? config.tts : null
 }
diff --git a/apps/desktop/src/lib/voice-playback.routing.test.ts b/apps/desktop/src/lib/voice-playback.routing.test.ts
index 8e7244cfd3..a4f07c60e3 100644
--- a/apps/desktop/src/lib/voice-playback.routing.test.ts
+++ b/apps/desktop/src/lib/voice-playback.routing.test.ts
@@ -71,13 +71,18 @@ describe('resolveSpeakStreamUrl', () => {
     expect(getConnectionFor).not.toHaveBeenCalled()
   })
 
-  it("dials the speaking session's owner profile ahead of the active profile", async () => {
+  // A Bot on another registered gateway is (its connection, its profile): the
+  // stream must mint against the Bot's OWN connection, never the active one
+  // with the Bot's profile name (two `default` Bots on two gateways).
+  it("dials the speaking session's owner (connection, profile) ahead of the active scope", async () => {
+    setApiRequestConnection('gw-active')
     setApiRequestProfile('research')
 
-    const url = await resolveSpeakStreamUrl('bot-adam')
+    const url = await resolveSpeakStreamUrl({ connectionId: 'gw-bots', profile: 'bot-adam' })
 
     expect(url).toContain('profile=bot-adam')
-    expect(getConnection).toHaveBeenCalledWith('bot-adam')
+    expect(getConnectionFor).toHaveBeenCalledWith({ connectionId: 'gw-bots', profile: 'bot-adam' })
+    expect(getGatewayWsUrlFor).toHaveBeenCalledWith({ connectionId: 'gw-bots', profile: 'bot-adam' })
   })
 
   it('preserves a backend-namespace profile already minted into the ws URL', async () => {
diff --git a/apps/desktop/src/lib/voice-playback.ts b/apps/desktop/src/lib/voice-playback.ts
index 8b5c47e10b..034fd7f79f 100644
--- a/apps/desktop/src/lib/voice-playback.ts
+++ b/apps/desktop/src/lib/voice-playback.ts
@@ -1,5 +1,6 @@
 import { resolveGatewayWsUrl } from '@hermes/shared'
 
+import type { OwnerScope } from '@/api/client'
 import { getApiRequestConnection, getApiRequestProfile, speakText } from '@/hermes'
 import {
   cutSentences,
@@ -71,11 +72,11 @@ function currentState(
   }
 }
 
-export interface VoicePlaybackOptions {
+/** The speaking session's owner: a Bot chat synthesizes with its own
+ *  profile's TTS voice, minted against the Bot's own connection. Omitted
+ *  halves → the active (connection, profile). */
+export interface VoicePlaybackOptions extends OwnerScope {
   messageId?: string | null
-  /** Owner profile of the speaking session (a Bot chat synthesizes with its
-   *  own profile's TTS voice). Omitted → the active profile. */
-  profile?: null | string
   source: VoicePlaybackSource
 }
 
@@ -108,7 +109,7 @@ export function stopVoicePlayback() {
 
 /** Exported for tests: the (connection, profile) routing contract below is
  *  exactly what broke in the desktop-remote voice report — keep it pinned. */
-export async function resolveSpeakStreamUrl(ownerProfile?: null | string): Promise<null | string> {
+export async function resolveSpeakStreamUrl(owner?: OwnerScope): Promise<null | string> {
   const desktop = window.hermesDesktop
 
   if (!desktop?.getConnection) {
@@ -126,8 +127,8 @@ export async function resolveSpeakStreamUrl(ownerProfile?: null | string): Promi
     // replies would synthesize with the local (often unconfigured) TTS
     // instead of the profile the user is actually talking to (#90051-adjacent
     // desktop-remote voice report, Aug 2026).
-    const profile = ownerProfile || getApiRequestProfile()
-    const connectionId = getApiRequestConnection()
+    const profile = owner?.profile || getApiRequestProfile()
+    const connectionId = owner?.connectionId || getApiRequestConnection()
 
     // Both awaits below are IPC round-trips into the main process with no
     // timeout of their own (#93454) — a wedged main-process round-trip
@@ -525,7 +526,7 @@ function openSpeechStream(wsUrl: string, options: VoicePlaybackOptions): SpeechS
  * `playSpeechText`).
  */
 export async function startSpeechStream(options: VoicePlaybackOptions): Promise<null | SpeechStreamSession> {
-  const direct = await directTtsConfig(options.profile).catch(() => null)
+  const direct = await directTtsConfig(options).catch(() => null)
 
   if (direct) {
     stopVoicePlayback()
@@ -542,7 +543,7 @@ export async function startSpeechStream(options: VoicePlaybackOptions): Promise<
     return session
   }
 
-  const wsUrl = await resolveSpeakStreamUrl(options.profile)
+  const wsUrl = await resolveSpeakStreamUrl(options)
 
   if (!wsUrl) {
     return null
@@ -576,7 +577,7 @@ async function playSpeechDataUrl(
   options: VoicePlaybackOptions,
   isCurrent: () => boolean
 ): Promise<boolean> {
-  const response = await speakText(speakableText, options.profile)
+  const response = await speakText(speakableText, options)
 
   if (!isCurrent()) {
     return false
@@ -672,7 +673,7 @@ export async function playSpeechText(text: string, options: VoicePlaybackOptions
   try {
     // Ladder: client-direct synthesis (profile's own TTS, no gateway audio
     // hop) → streaming WS relay → POST data-URL fallback.
-    const direct = await directTtsConfig(options.profile).catch(() => null)
+    const direct = await directTtsConfig(options).catch(() => null)
 
     if (direct && isCurrent()) {
       const session = openClientDirectSpeechSession(direct, options)
@@ -696,7 +697,7 @@ export async function playSpeechText(text: string, options: VoicePlaybackOptions
       return false
     }
 
-    const streamUrl = await resolveSpeakStreamUrl(options.profile)
+    const streamUrl = await resolveSpeakStreamUrl(options)
 
     if (streamUrl && isCurrent()) {
       const outcome = await playSpeechStream(streamUrl, speakableText, options)
diff --git a/website/docs/user-guide/bot-mode.md b/website/docs/user-guide/bot-mode.md
index 180a9f781f..378a4622f4 100644
--- a/website/docs/user-guide/bot-mode.md
+++ b/website/docs/user-guide/bot-mode.md
@@ -86,7 +86,7 @@ A Bot's look, title, and description are stored in the profile's metadata on the
 
 ## Voices
 
-A Bot speaks with its **own profile's** TTS settings (`tts.*` in that profile's `config.yaml`). Read Aloud, auto-speak and voice conversation in a Bot chat all synthesize through the Bot's profile, so two Bots with different voices sound different; a Bot whose profile has no TTS config falls back to the active profile's voice.
+A Bot speaks with its **own profile's** TTS settings (`tts.*` in that profile's `config.yaml`) on its **own gateway**. Read Aloud, auto-speak and voice conversation in a Bot chat — in a split tile or opened in the main pane — all synthesize through the Bot's (connection, profile), so two Bots with different voices sound different and two Bots with the same profile name on different gateways never share a voice. A Bot profile with no `tts.*` of its own uses that profile's server defaults; only a chat with no known owner (a plain session) uses the active profile's voice. Speech-to-text in a Bot chat still uses the active profile's STT settings.
 
 ## Routines