If you join an instance that isn't defederated with lemmy.world, you should have access to all of the same communities and comments that you'd see there. That's kind of the entire idea.

For example, I'm viewing this post and these comments from sh.itjust.works. I had to go back to the top of this post to see that it originated from lenmy.ml

[–] aceshigh@lemmy.world 2 points 1 year ago

that concept still blows my mind. we're all together now... but separately.

[–] deftdrummer@lemm.ee 1 points 1 year ago* (last edited 1 year ago) (1 children)

And this ties into people asking for things like "is there a way to LIST what communities an instance has?" On an app by app basis, because as the other user said - this whole "we're in this together" thing with the federation idea isn't really clicking.

[–] prole@sh.itjust.works 1 points 1 year ago

Sounds like user error.