Originally Posted by Mickey_

Usually when prizes of such value are drawn it takes a bit of time for both the organizers and the winners to get in contact and start the preplanned process (getting the prizes to them, marketing, pr, etc.)

To me it makes sense that they would keep the identity of the winners at the first stage partially anonymous (to protect their privacy, etc) and then potentially later on give them the option to reveal themselves and/or broadcast a thank you note/conduct a short interview.

tl;dr version
I don't suggest theorizing/questioning the legimitacy of the process. The show ended two days ago. Everyone's traveling, catching up from shows, etc.