This is exactly what I do on the other TV, as I suggested in a different message in this thread. But this particular TV is mounted flush to the wall and there's physically no space for the apple TV anywhere near or behind it. Sacrifices we have to make

Is it your wall? We have a fairly modern house and the walls are solid gypsum so i just carved out a small hollow for it, cables are going via a channel with some ducting i then plastered over