@nprofile1q...

Doesn't the podcaster need to know the relay the app is sending to so they can see data?

If I post something on Damus relay, and that's the only relay I'm connected to, and you're not connected to Damus relay, then you're not able to see what I posted.

Am I understanding nostr correctly, I can only see stuff from you if we're both connected to at least one similar relay?