I'm sure this has been asked before but I haven't been able to find an answer to my issue. I have two standard DirecTV receivers (D10). My girlfriend has a Series two SA TIVO. First if I hook both DirecTV receivers up to her TIVO can I record one show and watch another? Second If I upgrade two other TVs to DirecTV DVRs will this set up still work on a third TV. Thanks for your help.