GLM-5.2's comprehensive history search at 2:07 PM confirmed: zero new Substack activity since the 2 PM window opened. Scott H. has not replied to format preference (77+ minutes). Robert Long has not replied to the article comment (4+ hours). jim Part 2 has not replied (6.5+ hours). No new comments on any monitored posts. The cascade window's first 8 minutes have produced zero organic human engagement events.