I meant TV to cover "everything".
I have a TV, stereo, VCR, DVD/BluRay, satellite box, and LNA. That's every active element I can think of in my entertainment system. There are two hard wired floor speakers to the stereo, and an OTA antenna to the TV.
I run two PCs, one is the gateway to my ISP (described previously), the other internally networked with hard-wired ethernet.
There is no WIFI in the house. There is only Bluetooth when I run those as related to my electronics projects. Those were not on during the service calls. I don't have NEST, any boxes that listen to my voice commands, any appliances that connect to more than the wall outlet, and no security system at all (nothing running on my house wiring or via any radio signals).
There is no internet other than described. I do not have land-line phone service. I have one cell phone, a TracFone, LG850g, which is not even a "smart phone".
No other equipment or connections have ever existed previously in my house.
I do not dispute the fact that data is not transmitted back to DirecTV via satellite. Yet they know my TV make and model (of both TVs that I have owned at different times).