I can control my DirecTV DVR with my Vizio Co-Star remote control. And I can control my Co-Star with the Google TV App from my Android phone. But I can't seem to control my DirecTV DVR from the Google TV App. The app has DVR controls but I can't get them to work with my DVR. Any suggestions? Also, how is the phone supposed to control the DirecTV DVR anyway? Does it send control signals over WiFi like the Android DirecTV Remote app does, or does the Google TV app trigger Costar's own remote to send IR signals to the DVR?