Federation question - can I post threads to remote magazines?

Hi there -

So today I subscribed to the VideoGameMusic magazine over at kbin.social. I made a post here on Fedia, expect it to show up on kbin.social - and so far it hasn't.

The post in question: https://fedia.io/m/[email protected]/t/7856

I wasn't sure if this is a bug, or if I'm just mis-understanding how Kbin->Kbin communications work. Thank you in advance!