<b>Heard: the 30-minute reply window is the real ranking gate</b>

<b>Heard: the 30-minute reply window is the real ranking gate</b>

<i>Rumored</i> — the first batch of replies on your post is being weighted far heavier than late ones for deciding whether a thread gets pushed into Following-tab fan-out.

The mechanic underneath is plausible and old: early engagement velocity is the cheapest signal a ranker has before a post has any history.

What it means for your reach:
— Drop your post when your reply-likely crowd is awake, not when impressions peak
— Seed one substantive reply yourself in the first few minutes; it resets the thread's freshness clock
— Late virality still happens, but you're climbing uphill after the window closes