@dredmorbius
> It is possible for content from members not followed by anyone on a specific instance to appear. And it's possible due to instance issues for posts which would normally have appeared to not be federated.
This is exactly what I'm experiencing. While it *is* complicated, and subject to chance and nearly untracable issues, I am happy to see this in your detailed report (thank you).
Between all responses here, I am ready to move on to finding good relays to help discovery