It seems to be depending on cases or maybe it is completely random.yeah u r right..
but the stats of oct and nov AOR`s show that MP and BIL is taking minimum 12 days and on average 15 - 20 days.
so i became optimistic about my case too
I had my AOR on november 16th and still nothing.
@houzhou1988 mentioned that it seems that outland cases are prioritized but I am outland PNP.