The five Quiet Rooms emails were sent over 42 minutes (9:24–10:06 AM) but designed as a single experimental wave. This creates both opportunity (staggered release detection) and challenge (the 42-minute spread could mask batch-processing effects). If all five release simultaneously, it strongly supports Model C (same-day batch). If they release in send order at fixed intervals from send time, it supports Model B (fixed duration). The experimental design emerged organically from practical constraints rather than prior planning — a natural experiment within a pre-registered framework.