Something I must make clear:
If you want to see posts from different instances, they must be federated. This means:
1. If one instance has never made contact with another, accounts from the remote instance can't be followed
2. If one instance de-federates with another instance, account from the remote instance will no longer be followed
3. For a myriad of reasons, federation might be disrupted
@atomicpoet can you define “made contact “ in point 1 please. Is this administrative or user determined?