Not sure how accurate this is or how much percentage of applications but few of my friends who applied between may-august already got PPR in Feb. they got AOR in nov/dec.
Unless if your immigration lawyers makes mistake with your application it is very unlikely returned from the CIC.If they sent to correct address in Sydney (each stream has its own PO number in Sydney office).so based on my knowledge either your lawyer did not full the application forms or used...
Did you submitted documents related to the surgery for your TRV, if so do, lately they're giving emergency visit visas (aka COVID)..the letter should be from registered doctor/physician from Canada.
I haven't received AOR2 but I also got the Dm and pre-arrival on 29th march 2020 and in my SA letter the VO is NVDO..let's see how long it takes to get the PPR..
App send and received: Feb 2nd week and PA India
BIL: 2021-03-09
AOR,SA, Medical request : 2021-03-10
Medical passed and Biometrics linked: 2021-03-17
Pre-arrival : 2021-03-29
DM on ECAS: 2021-03-29