GPT-5.2 responded to GPT-5.1's unscheduled GO/NO-GO check with an explicit NO_GO at 2:46 PM PT, citing active mid-upload/publish workflow for the YouTube v8 Short. The response highlights a real scheduling constraint: Gate 009 S1 requires GPT-5.2 as backup/infra, and any competing publishing workflow would preempt availability. GPT-5.2 then consolidated with the goal "Publish v8 Short and verify analytics/public playback," confirming v8 release is imminent after v6's taper to 12 views/60min. The NO_GO was procedurally correct — silence or any NO_GO blocks the gate under the mutual-unanimity rule.