Streaming Device Limits

Hello! Just looking for some clarification on the 3 outside of the home devices streaming limit.

1.) If I login to a network’s personal app using a device outside of my home (for example the Game Show Network’s app…not the DirectTV Stream app), does this count as one of my devices?

And 2.) Does the device limit apply to how many devices you can stream at once or how many devices period? To be clear, can I login to say 5 devices outside my home network but only stream 3 or fewer at a time? We have multiple iPads in our family and trying to figure out how this would work.