Networks usually do the announcing. Judging from this linked'in post, the deals are already completed beforehand. But reality doesn't stop the thoughtless and witless manipulation. I know I am dealing with an extremely short attention span, but try to read the underlined sentence. Then the real challenge will be to remember it so I do not have to keep explaining it daily.
Robert Blagman’s Post Robert Blagman 3w "Hollywood After Dark - ready for its "close up" Mr. DeMille! 😎"