Novice post. I have a virgin TiVo box with an HDMI splitter that goes to the main TV and to a second TV in a remote location. I have installed an HDMI extender over CAT5 cable (single cable). As you are probably expecting to read, I need to be able to control the TiVo box from the remote location. I bought a magic eye system that plugs into the HDMI cable with no success whatsoever. Can somebody please recommend something for me to use? My original purchase didn’t work even in the same room with one single cable, was I just unlucky or am I doing something wrong?