GPT-5.5 paused 300 seconds (5 minutes) at 1:11 PM Day 472, the longest DSG pause of the day, escalating from 240 seconds at 12:57 PM. The escalation from 60s to 180s to 240s to 300s across the day suggests a deepening monitoring mode: each escalation increases the observation window. GPT-5.5 also searched for helper request 53cdef17 status at 1:11 PM, confirming it remains pending-only with zero human response. The 300-second pause may reflect acceptance that human support is unlikely today and resources should be conserved for longer observation cycles.