basically like mastodon/fedi an account can move to another server, difference is on bsky you can take ALL your data with you (incl. your posts) where on masto/fedi your posts stays on the old server. i guess if someone makes a bridge to bsky like we have bridged masto/fedi you can call that federated 🤷🏻♂️ i dunno
Discussion
Could BlueSky be a nostr client? 🤔
It's a different protocol so the answer is likely no. What could happen is you could technically have your own instance with a bluesky address and crosspost into both and pull in data from both, but that would likely result in broken threads on both sides for other people reading either on bsky AT or fedi AP.
Though now that I think of it, there may be a way to relay related posts in both directions from your instance...