Is it possible to use my IR Harmony Remote at the same time as as RF on the DirecTV remote? I'd like to back-feed with an RF modulator to the bedroom so we can view DTV recordings on our TV in there. Unfortunately, at the moment if I enable RF mode on the DirecTV remote so we can control from there, my Harmony 550 stops working as IR no longer seems to be active. Is there a workaround for this?