Here the deal. I have a Tivo elite and a Comcast box located in my living room. I have my tivo connected by HDMI to my ling room tv I have it connected by component cable to a Sony tv in my my bedroom. I control the Tivo by ir extenders and Harmoney one remotes. The problem I am having is that the some of the Comcast signals are changing the channels on the Tivo. Would any one know a way of solving this problem?