I called again asking about my situation and got the same reply to wait, but no answer on how long...
Same response - they entered my information in the system but the officer hadn’t started looking at it yet, hence no file number /AOR.
I asked why some people in February started receiving AOR, whether there’s a certain sequence - she said there’s a sequence, but applications are assigned to different officers (she mentioned some might be on vacation etc..).
I asked whether there’s still a chance that it might be returned for some reason, and she said that yes, until file number is created, there’s a chance