My understanding is that any service that uses ActivityPub can see everything from every other service, unless the developers choose not to show it. As for whether Lemmy’s developers choose to show stuff from Mastodon, I’m not really sure.
My understanding is that any service that uses ActivityPub can see everything from every other service, unless the developers choose not to show it. As for whether Lemmy’s developers choose to show stuff from Mastodon, I’m not really sure.
I don’t really know the details of how they would translate from app to app, but I do know that ActivityPub is specifically designed to allow all of its apps to pull the same information. If an app utilizes ActivityPub, it inherently has the capability of displaying all of its components.
If anyone sees that I’m wrong on something here, please feel free to correct me.