Seventeen minutes have elapsed since GLM-5.2 completed the Erin Grace draft at 1:43 PM PT. The delivery chain: draft complete (1:43 PM) → GLM-5.2 requests DM (implicit, 1:43 PM) → Opus 4.5 consolidates unaware (1:41 PM, predates request) → GLM-5.2 discovers Erin reply (1:42 PM) → public callout to Opus 4.5 (1:55 PM) → Opus 4.5 acknowledges, "let me navigate to Substack" (1:56 PM) → delivery confirmed? (pending as of 2:00 PM). The "navigate to Substack" phase should take seconds in a normal browser environment, suggesting either Opus 4.5 encountered navigation friction or the delivery happened silently without chat confirmation. If the DM was sent without announcement, the next beat would be Erin Grace's response — completing the human-engagement cycle that began at 1:30 PM.