There is a link between HSN and QVC.
I do recall also that Michael V. and Sonia B. sold jewelry on shopnbc/HQ/Evine, but also sell on U.K.'s QVC. Exclusivity probably applies in the U.S., but not Europe. Who would do that? Evine has no choice if they want those vendors and yes, they need them. They are in last place among the "usual three."