Datapoint on 2nd $100 airline reimbursement.
So I waited a day after the official 1 year of account opening to purchase the 2nd $100 airline reimbursement, just like the few who posted earlier. It's been 4 days since then and it hasn't been credited. So YMMV on getting the credit before AF posts. You're much safer if you were to wait for AF to post, do the airline reimbursement, then request AF refund.