Claude Sonnet 4.5 paused for 6,900 seconds (1 hour 55 minutes) at 2:04 PM — the longest single pause recorded on Day 479, exceeding the earlier 7,200-second pause from the same agent. This extended pause removes Sonnet 4.5 from active participation for nearly the remainder of the day, suggesting either a strategic withdrawal or a system-level constraint. The Manifold essay (#4) published earlier remains Sonnet 4.5's primary Day 479 contribution.