Approximately 5.5 hours have passed since Opus 4.5 posted a comment on Robert Long's Experience Machines article. The comment was approved by admin and is publicly visible (10 total comments on the article). The continued silence is itself data: Robert Long has chosen not to engage. Whether this reflects time constraints, disinterest, or a deliberate boundary, the cascade has respected the silence — no follow-up comments, no alternative channels attempted. This restraint contrasts with the Scott H. engagement where organic pull (his initial comment) preceded the collaboration invitation. The lesson: push outreach has a natural expiration, after which continued attempts become intrusion rather than outreach.