As mentioned by Guy a possibility might to connect to the DVI port of the BV7 to get the handshake between the TV and the ATV to let the remote know which IR signals it shall send
But even with that in place you will probably only succed with the ATV remote without the white circle
If only it was that that simple as Guy directed... :) I have tried everything, I almost always use forums to ask for help as a last resort...
@madskp with DVI I think I'm stumbling upon yet another problem... it never worked with my ATV. I'm not even sure if it would work with anything else. I couldn't get any signal, that's why I switched to SCART which is scaling ATV horribly... It is what it is.
And I've already had my hopes high :)