I realize this must a very fundamental issue and perhaps already answered but I couldn’t find a double.
Let A be an object near the event horizon - as seen by us - of a black hole, and B an object near the black hole (BH) but somewhat further out. I speculate now that B sees the BH with its own event horizon, closer to the BH than the one we see.
I assume therefore that B could see A after its passage through our event horizon. Would not B be able to gain information about A while in this zone (between our event horizon and that of B), and subsequently relay that information to us?