I just got an Onkyo TX-NR646 AV receiver. I'm using harmony one remote. The OEM remote has a second room function/button - Zone 2, which you select first, then the AV power toggle to activate the second zone. However, there is no signal received from the harmony when trying to learn the Zone 2 command. i assume the Zone 2 button on the OEM remote just puts the remote in that mode, the red light does flash but again the harmony doesn't detect anything. any ideas how i can set this up - to allow the harmony to send commands to utilize my second listening area? thanks!