Tom, I have Spectrum, but I downed loaded their App in the App Store, so since they are their completion, you may be able to do that.I also have Apple TV (which is a subscription service that Ciosts only 4.99 a month and has great programming and the App Store icon, so I am not sure if you have that app on your screen.
Contact Direct TV and give them the complete name of this TV and ask them if, like spectrum, they have a downloadable App.
Good luck, I kind of think you may be able to do that if they in fact have an App.