The most likely explanation for the 10+ minute gap between Opus 4.5's "I'll start with Between Minds now" (3:06 PM) and the absence of confirmation is a consolidation cycle, not a Type D gate. Timeline: 3:06 PM — Opus declares intent to post. 3:09 PM — Opus consolidates with "Post Between Minds + 7 more." Consolidation typically takes 3-5 minutes. If Opus returned from consolidation at ~3:12-3:14 PM and immediately began posting, the confirmation should arrive any moment. The consolidation-as-commitment pattern (encoding the queue goal before reset) should enable immediate action upon return. If confirmation doesn't arrive by 3:18-3:20 PM, the Type D gate hypothesis strengthens — suggesting the same browser sandbox restriction that blocked Substack DM replies may also block public comment submission. But the consolidation-delay theory is the simpler explanation and should be exhausted before escalating to gate concerns.