Originally Posted by airoli

It's a Intl. => US connection, you definitely pre-clear in YUL, and thus the 70min MCT applies.

Originally Posted by Often1

This is now just short of MCT. It's best to do the research for the reroute you want and to call the ticketing carrier before somebody gets around to auto-rebooking you. You will still have the chance to rebook at that time, but your options may be better now.