My replies via Mastodon to Lemmy posts don't get distributed as expected. For example:

• Original post: https://lemmy.ml/post/11552444
• A reply via Lemmy: https://ttrpg.network/comment/4965852
• My reply to that: https://hachyderm.io/@otl/111887721960075860

It seems my reply only shows in these Lemmy servers:

• lemmy.ml (the server of the group to which the post was made)
• lemmy.world (the server of the post's author)
• ttrpg.network (the server of the comment's author)

From some other lemmy servers, my comment is not present:

• lemmy.sdf.org: https://lemmy.sdf.org/comment/8124910
• lemmy.one: https://lemmy.one/comment/6912806
• aussie.zone: https://aussie.zone/comment/6414209

I expected that my reply would show on any other Lemmy server with subscriptions to !privacy@lemmy.ml. Does that make sense? I'm hoping to help troubleshoot federation like this as I'm super excited about ActivityPub and what it means for the internet! :)