If I post here, does it reflect on the Lemmy instance?

perhaps

I'm on Lemmy right now, so yeah

It is on lemmy yes

Perchance. I can see this post from lemmy for now. But remember, any lemmy back-end updates could potentially break lemmy-kbin interoperability.

Meow

Only if you post a mirror.

I see it on my instance and can see this is from a different instance.

Oh hey I guess my kbin federation is finally working!