When do eliminated Traitors and Faithfuls find out who won?

I have been watching lots of the eliminated faithful giving interviews recently and I thought 'surely they must know who won'.

I've read that the eliminated traitors and faithful don't find out who won until the final and the finalists sign an NDA. However, I find it difficult to think that they wouldn't have any communication at all. Loads of contestants make Tiktoks straight after the episode airs. What's the reality?