I posted a comment on this post:
https://lemmy.world/post/270586
My comment is the only one so far…
I accidentally found that this same post had lots of comments if I access it via this other link:
Are these completely different posts because they’re in different Lemmy instances? Why don’t the two get “joined” together? Do they look separate because the user just posted them twice in different instances, or there’s some “per instance” comments going on?
Correct, you will only see posts by other users on lemmy.world and only they will see your posts. You basically end up with an entire different community, just one that shares the old name. If Beehaw ever re-federates with lemmy.world, than the two communities will become one again.