Let’s use lemmygrad.ml as an example. My home instance is lemmy.world, which I see has defederated from lemmygrad.ml. If I post to a community on lemmygrad.ml, will everyone be able to see it?

What if the opposite is true? What if lemmygrad.ml is the one who defederated from lemmy.world, and not the other way around as in the above example?

I’m just a little confused by how federation works. I know that I won’t see lemmygrad.ml posts on my All feed due to defederation, regardless of who defederates with whom.