Found this out by accident today while calling in a repair order.
If you have Verizon phone service, and DirecTV, you can get a discount of something like $14/mo if you put them on the same bill. If you also have Verizon for your cell phones, the discount for putting your DirecTV on your Verizon phone bill goes up to $17 and change per month.
It’s not a lot, but considering you don’t have to make any other changes to any of the services, it’s free money.