I have submitted on June 21 and no ADR or AOR yet, just got a temp application number when i called into IRCC in December last year, the agent mentioned once the officer actually starts reviewing the file only then an AOR will be sent out to me and also the actual application number will be valid (which is basically temp app number without the X in the beginning, just F...). not sure to what extent this is correct (the fact that they are going in order of applications received) , could be partially because i know someone who submitted a day after me and got PCC request back in Nov already. Processing them in the order of Date received does makes a lot sense but there could be more factors besides date received i guess, so just hang tight.