I just purchased a 2018 3160EL and I am trying to figure out my electronics. There are two HDMI cables attached to the Living Room TV. One appears to go to the Jensen and the other into the wall. I assume the one in the wall would route to the bedroom TV but there is only a coax cable for the bedroom TV. Can someone please give me a clue where this HDMI cable may lead. Thanking you in advance for your time.