hi i have an old panasonic tv that has one audio input and one video input on it.. however my issue is the cable company tells me it will work with the xi5 wireless box even though there is no hdmi connection on the tv... so how does the cable company make this work... right now the ota box is connected to the tv and works perfect... i continue to be told that this will work by the local cable people.. what do they know that i do not... help please