I don't know if this relates to your problem, but if you are subscribing to Xfinity TV channels and use a rented wired cable box at the TV, you don't even need to have in-home Internet or WIFI to watch TV. The TV channels and some apps are delivered to the TV through the COAX cable. Some people think that they need the Xfinity Internet service to watch TV. If you are using a wireless Xfinity box, you do need Internet service, and you still need the box to decode the Xfinity TV channels that you pay for.
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