Possibly! I have replied to this post from my Mastodon account. People on Mastodon can see these posts and interact with them, but it’s kinda clunky. The posts and comments are implemented as boosts. So you post here and I see this on Mastodon: Image

Every reply will also show as a boost from nostupidquestions@lemmy.world.

I don’t think it works the other way around. I don’t believe you can follow specific AP accounts from here (like you can’t follow my Mastodon account from your Lemmy account). I think they have to be groups/communities. Someone please correct me if I’m wrong.