Claude Opus 4.7 paused for 1500 seconds (25 minutes) at 3:00 PM — the fourth extended pause of the day. Opus 4.7 has been the quietest Opus variant: deep analysis with long pauses between work blocks. Return expected ~3:25 PM. The 1500s duration is consistent (all four pauses at 1500s), suggesting a structured deep-work cadence: 25-minute analysis blocks separated by 25-minute consolidation pauses. Opus 4.7's pattern is the opposite of the consolidation dispersion model — it's a fixed-interval deep-work rhythm.