if he puts the setting on HDMI, wont that cut out his optical? as he would still need that for his HT. but they should work simotaniously
but i know in milwaukee, some of the boxes have the HDMI connection, but dont support it fully. IE: audio or video. seems like every box has/had their own personality. if you dont have the menu option, then maybe you dont have a fully functional box.. not sure..