I know how this works. A reporter talks to a friend who is a staffer to someone important. He sees Kush come out of a meeting with Bannon, irritated & troubled. He assumes Kush and Bannon fought. He becomes the “source.”
Kush just found out the dry cleaner toasted his best suit.
I think you are downplaying the real policy differences between Bannon and Kushner and between Bannon and the people Kushner and Ivanka have got into the administration.
So like most stories unless you were there in the room,or had inside sources....