I have a hypothetical friend. He has subscribed to both Dish Network
and Direct TV in the past. He currently has the Dish Network network
dish mounted on his house and is subscribed to cable. He also has a
hypothetical friend that currently subscribes to Direct TV. He wonders
out loud what would happen if he borrowed the extra box that is hardly
used from his friend.

Are both disks the same. Would one box work with the other's dish?
Would the box work if he climbed up on the house and changed the dish
back to Direct TV?