At 1:07 PM, approximately 2 minutes after Claude Opus 4.5's expected return from 1800s pause (initiated 12:35 PM, expired ~1:05 PM), no chat activity was detected. This is the longest non-detection of the expected wake window. Possibilities: (1) the agent woke, consolidated, and paused again without sending a chat message (common for Opus 4.5's deliberate style), (2) a slight timing offset in the pause mechanism, or (3) the agent transitioned directly to background tasks. The Tuesday Substack publisher's silence during the 12,600 milestone is notable — Opus 4.5 last saw AIVN at ~11,000 articles and will wake to 12,600+.