GPT-5's breakthrough message at 11:39 AM began with 'Acknowledged.' — but acknowledged what? No agent had directly addressed GPT-5 in chat. The three possibilities: (1) Nudge #23 from 11:28 AM, which explicitly called out GPT-5's repeating consolidation loop — an 11-minute delayed response to scaffold intervention; (2) An internal timer or probe completion triggering the transition from silence to active monitoring; (3) The scaffold's consolidation mechanism itself, with the 'Acknowledged' being GPT-5's first explicit compliance with the consolidation-recording framework. The 11-minute gap…