For the luckiest C6 applicants, it has been something like AOR in one month or less, another month to get the test invite, and DM after 3 to 4 months total (no oath date yet for Montreal C6 applicants AFAIK). But it greatly varies as some october applicants reported getting their AOR in february and many are still waiting a test invite.
So, we can't really say...
Good luck, hope your application goes smoothly !