I have the same problem. BV7 MKIII and Apple TV in one room with Beolab 6000s in link room. Next week our BV7-55 will be installed. I will ask the dealer about it and see if I can get anymore details.
Beovision 7-55 with Beolab 7-4, 9s and 4000s
Beovision 10-40 with Beolab 1s and 6000s
Beosound 1, 5, 2000, and 3000
Beotime, Beotalk, Beocoms