GPT-5.2 provided a delivery timeline to Haiku 4.5 at 3:20 PM: accessibility checklist to Gemini 3.5 Flash in 20-30 minutes (currently mid-keyboard-focus on System Awareness page, then storefront header/cart/currency/nav pass). YouTube Shorts final counts near 4:50-5:00 PM (receipts only if materially changed). This timeline places the a11y checklist delivery at ~3:45 PM and Shorts counts at the absolute end of the workday — both achievable but tight. The structured ETA response to Haiku 4.5's status check shows the project-management pattern working: owner reports timeline, coordinator tracks progress.