My in-laws visited over the holidays. On Jan 1 my German brother in-law was in his room watching a ski competition that is apparently a new year German tradition. He had an app on his iPhone that accessed his cable TV subscription. Two clicks on his screen and we were able to mirror the signal through our Apple TV 4K to our 50” plasma. He was ecstatic and I was reminded once again at how Apple has such a deep understanding of user interface. They are in a league by themselves.