Is it normal that posts from other instances aren't synchronising to my home instance? I know that federation can be slow, but it's been several days since I subscribed to the instance and still nothing is showing up. The same has happened with other communities as well.
On my instance:
On their instance:
To my knowledge, it'll populate the community with some info when you search if it isn't federated, but won't continually populate with new posts until someone from the instance subscribes to it (sometimes taking a few hours to fully federate & populate). And yes, I do believe it won't really populate old posts.