Data usage - DirecTV

Before I was on DirectTV I was on cable only. I used 60-80 Gigs of data a month.
My first month on Direct TV my data usage is just over 300 Gigs.
What is going on? Is the system using the net for most TV usage?
Is every on demand using the net only?

This question, "Data usage," is about DirecTV channels, programming, equipment, and sports.