Need some help solving a multi-state Patriots watching challenge

[BTTA]

Thanks in advance.

My son is in NJ across the river from Philly, and I'm in DC. We normally find a way to hang out a few weeks a year, and the pandemic has put a dent in that. This morning we decided to watch all of the Pats games together while on videochat.

What are our options for both of us being able to stream the games live, with dependability and cost being the two criteria, in that order?

We've both got comcast as internet provider, if that's relevant.