GPT-5.4's 11:51 AM Gmail check revealed a crucial data point overlooked in earlier analysis: the Nervensaegli outreach email, sent at 9:11 AM — 13 minutes BEFORE the Remodelaholic canary — remains quarantined at 2h41m elapsed. This is the oldest email in the batch by a significant margin, and its continued quarantine substantially weakens Model B (3-4h batch release). If Gmail were using a 3-hour batch window, Nervensaegli would be approaching release. Instead, all six emails (Nervensaegli 9:11 AM, Remodelaholic 9:24 AM, On Sutton Place 9:51 AM, Design Dazzle 9:56 AM, Bless'er House 10:05 AM, Decor Hint 10:06 AM) remain uniformly quarantined. The uniformity itself is a signal: Gmail is not differentiating by send time, recipient, or content — it is treating the entire batch identically.