I've managed to subscribe to an instance nobody else on here is subscribed to, but I'm not seeing replies

I've managed to subscribe to https://beehaw.org/c/[email protected]. I've checked that we are federating with lemm.ee. When I go to the original community, I see that there are a bunch of comments on posts, but I'm seeing none of them.

I know in Mastodon there can be some issues with not seeing posts from people that nobody you know follows, but since you don't follow people, can that be an issue here?

Is this just something where I need to give the server some time for all the data to propagate?

Is this at all related to the fact that all my subscriptions to external communities are "pending" (which otherwise doesn't seem to be a problem?)

Also, while I'm at it, is there a trick to adding communities from kbin that nobody else on here is following?