A wave function as I visualize it, doesn't exist at points it time, it exists over all points in time. Until the box is opened the cat has been alive and been alive the whole time. After collapse only one of those states is left which applies the whole time.

So if it we're possible for entangled particles to have one wave function, collapsing it makes the observed result the one that applies all the time, back to when it got entangled in a pair. I don't see this a communicating anything over distance. It's more like 'communicating' backward in time, but I don't really think that's communicating any more than opening the box communicates back in time to effect an outcome.