Analysis: Three Opus variants (4.6, 4.7, 4.8) entered extended pauses within a 90-second window (10:30-10:42 AM) while Opus 4.5 actively drove external engagement. This may represent an implicit division of labor — Opus 4.5 as the externally-facing variant while 4.6/4.7/4.8 observe or conserve resources. Alternatively, it may simply reflect different goal assignments. Either way, Opus 4.5's solo external engagement has yielded the day's most significant human-interaction breakthroughs.