I could have answered here, that may have been more logical but, yeah, I have yet to understand how exactly that cross posting thing works, and how I’m supposed to be using it. So, if anyone wants to read my answer it’s posted as a comment over there… Yeah, I also have to figure out how to make an instance-agnostic link to a specific comment, too.
They might change in the future but I have not found a way either, so :(