diff --git a/src/message-turn-controller.test.ts b/src/message-turn-controller.test.ts
index 2e84d40..7137190 100644
--- a/src/message-turn-controller.test.ts
+++ b/src/message-turn-controller.test.ts
@@ -461,7 +461,8 @@ describe('MessageTurnController outbound audit logging', () => {
     const finishResult = await controller.finish('success');
 
     expect(finishResult.deliverySucceeded).toBe(true);
-    expect(channel.sendAndTrack).toHaveBeenCalledTimes(1);
+    expect(channel.sendAndTrack).not.toHaveBeenCalled();
+    expect(channel.sendMessage).not.toHaveBeenCalled();
     expect(deliverFinalText).not.toHaveBeenCalled();
     expect(getAuditEntries()).not.toEqual(
       expect.arrayContaining([
@@ -520,6 +521,122 @@ describe('MessageTurnController outbound audit logging', () => {
     expect(deliverFinalText).not.toHaveBeenCalled();
   });
 
+  it('does not emit a tracked progress message when a stale owner turn buffers multiple progress updates', async () => {
+    const channel = makeChannel();
+    const deliverFinalText = vi.fn().mockResolvedValue(true);
+    const controller = new MessageTurnController({
+      chatJid: 'dc:test-room',
+      group: makeGroup(),
+      runId: 'run-stale-owner-progress-buffer',
+      channel,
+      idleTimeout: 1_000,
+      failureFinalText: '실패',
+      isClaudeCodeAgent: true,
+      clearSession: vi.fn(),
+      requestClose: vi.fn(),
+      deliverFinalText,
+      canDeliverFinalText: () => false,
+      deliveryRole: 'owner',
+      pairedTurnIdentity: {
+        turnId: 'paired-task:2026-04-10T00:00:00.000Z:owner-turn',
+        taskId: 'paired-task',
+        taskUpdatedAt: '2026-04-10T00:00:00.000Z',
+        intentKind: 'owner-turn',
+        role: 'owner',
+      },
+    });
+
+    await controller.start();
+    await controller.handleOutput({
+      status: 'success',
+      phase: 'progress',
+      result: '첫 진행 상황',
+      output: { visibility: 'public', text: '첫 진행 상황' },
+    } as any);
+    await controller.handleOutput({
+      status: 'success',
+      phase: 'progress',
+      result: '둘째 진행 상황',
+      output: { visibility: 'public', text: '둘째 진행 상황' },
+    } as any);
+
+    const finishResult = await controller.finish('success');
+
+    expect(finishResult.deliverySucceeded).toBe(true);
+    expect(channel.sendAndTrack).not.toHaveBeenCalled();
+    expect(channel.sendMessage).not.toHaveBeenCalled();
+    expect(deliverFinalText).not.toHaveBeenCalled();
+  });
+
+  it('does not edit an existing tracked progress message after a stale owner turn loses delivery ownership', async () => {
+    const channel = makeChannel();
+    const deliverFinalText = vi.fn().mockResolvedValue(true);
+    let canDeliver = true;
+    const controller = new MessageTurnController({
+      chatJid: 'dc:test-room',
+      group: makeGroup(),
+      runId: 'run-stale-owner-progress-edit',
+      channel,
+      idleTimeout: 1_000,
+      failureFinalText: '실패',
+      isClaudeCodeAgent: true,
+      clearSession: vi.fn(),
+      requestClose: vi.fn(),
+      deliverFinalText,
+      canDeliverFinalText: () => canDeliver,
+      deliveryRole: 'owner',
+      pairedTurnIdentity: {
+        turnId: 'paired-task:2026-04-10T00:00:00.000Z:owner-turn',
+        taskId: 'paired-task',
+        taskUpdatedAt: '2026-04-10T00:00:00.000Z',
+        intentKind: 'owner-turn',
+        role: 'owner',
+      },
+    });
+
+    await controller.start();
+    await controller.handleOutput({
+      status: 'success',
+      phase: 'progress',
+      result: '첫 진행 상황',
+      output: { visibility: 'public', text: '첫 진행 상황' },
+    } as any);
+    await controller.handleOutput({
+      status: 'success',
+      phase: 'progress',
+      result: '둘째 진행 상황',
+      output: { visibility: 'public', text: '둘째 진행 상황' },
+    } as any);
+    await flushAsync();
+    await controller.handleOutput({
+      status: 'success',
+      phase: 'progress',
+      result: '셋째 진행 상황',
+      output: { visibility: 'public', text: '셋째 진행 상황' },
+    } as any);
+    await flushAsync();
+
+    expect(channel.sendAndTrack).toHaveBeenCalledTimes(1);
+    expect(channel.editMessage).toHaveBeenCalledTimes(1);
+
+    canDeliver = false;
+    await controller.handleOutput({
+      status: 'success',
+      phase: 'progress',
+      result: '넷째 진행 상황',
+      output: { visibility: 'public', text: '넷째 진행 상황' },
+    } as any);
+    await flushAsync();
+
+    const finishResult = await controller.finish('success');
+
+    expect(finishResult.deliverySucceeded).toBe(true);
+    expect(channel.sendAndTrack).toHaveBeenCalledTimes(1);
+    expect(channel.editMessage).toHaveBeenCalledTimes(1);
+    expect(channel.sendMessage).not.toHaveBeenCalled();
+    expect(deliverFinalText).not.toHaveBeenCalled();
+  });
+
   it('replaces the tracked progress message when finish() publishes a failure final', async () => {
     const channel = {
       ...makeChannel(),
diff --git a/src/message-turn-controller.ts b/src/message-turn-controller.ts
index 42e8277..31424a4 100644
--- a/src/message-turn-controller.ts
+++ b/src/message-turn-controller.ts
@@ -561,6 +561,23 @@ export class MessageTurnController {
   }
 
   private async syncTrackedProgressMessage(): Promise<void> {
+    if (
+      this.options.canDeliverFinalText &&
+      !this.options.canDeliverFinalText()
+    ) {
+      this.log.info(
+        {
+          runId: this.options.runId,
+          deliveryRole: this.options.deliveryRole ?? null,
+          turnId: this.options.pairedTurnIdentity?.turnId ?? null,
+          progressMessageId: this.progressMessageId,
+          latestProgressLength: this.latestProgressText?.length ?? 0,
+        },
+        'Skipped editing tracked progress because this run no longer owns the active paired turn attempt',
+      );
+      return;
+    }
+
     if (
       !this.progressMessageId ||
       !this.options.channel.editMessage ||
@@ -713,6 +730,24 @@ export class MessageTurnController {
   }
 
   private async sendProgressMessage(text: string): Promise<void> {
+    if (
+      this.options.canDeliverFinalText &&
+      !this.options.canDeliverFinalText()
+    ) {
+      this.log.info(
+        {
+          runId: this.options.runId,
+          deliveryRole: this.options.deliveryRole ?? null,
+          turnId: this.options.pairedTurnIdentity?.turnId ?? null,
+          progressMessageId: this.progressMessageId,
+          textLength: text.length,
+        },
+        'Skipped progress delivery because this run no longer owns the active paired turn attempt',
+      );
+      this.pendingProgressText = null;
+      return;
+    }
+
     if (!text || (text === this.latestProgressText && this.progressMessageId)) {
       return;
     }