Mine Aor is july 29 and p2-oct 31 still got no ecopr ..As far as I can see, AOR date is, in general, used to prioritize the issuance of eCoPRs. it looks like IRCC is currently issuing the ecoprs for those who received AOR in August 2024.
my timeline:
AOR: Aug 20
P1: Dec 17
P2: Dec 23
ecopr: waiting