that provider. DirectTv doesn't have the P12 network and other sports channels. So if you were to get Comcast or someone similar with P12 network that would be the best way.
Perhaps others know a better way, but as far as I know if you want both to have DirectTv you'll need to have them bring you another receiver. They have a home link system where they can run 5 receivers in your house.
I've had at least a two tv system for over almost 20 years now. Once you switch to dual tvs, you'll wonder why you didn't do it long ago.