I don't know if anyone else has questioned this before, I haven't seen it discussed at least.
If Chana was the Herald who was sent to Braize, and "broke," it's a natural thought to think she ran and hid..got caught..and broke pretty quickly, but that this whole process took about a year-ish amount of time to happen.
But, what would be the ramifications of her giving up the second she got to Braize? If Odium could have started a "traditional" desolation a year or more beforehand, and chose not to because of the Everstorm, what would that mean?
There are other events/motives that could be called into question by this as well, but the thought that things could have gotten started sooner, but didn't, seems like a very Brandon thing..."Come on everybody, why might this be???" Full disclosure, I don't know but it seems like it would be a big deal.
Anyway, that's my thought of the day.