I think a lot of us got the OK to train letter which had a quick and confusing follow up, leaving it unclear whether we were actually cleared to train. I called back to the hiring office. They looked at my profile and let me know that I was marked as OK to train. I don't know if it was the same for everyone but my initial thought is that if you got the e-mail, you are cleared and the second e-mail was for expectation management irt start dates. Jan 21st interview btw.