One thing I don’t get right now, is how kbin/lemmy interact with each other?

When I subscribe to /m/technology here on kbin, do I get to see /c/technology posts from lemmy and can interact with them from within kbin? Or would I need to separately subscribe somewhere, or even register a new account on lemmy?

Also, If they’re automatically federated, then how does it work with /m/askkbin and /c/asklemmy, both with different names.

Thanks!