clearly

Hi folks,

Air Canada has changed our flights from a 3 hour connection that I booked with to 57 minutes. Using their website, I could have changed from this 57 minute connection they provided to a 6 hour connection, but that did not sound particularly enjoyable.

My question for ya'll is, if you have traveled through a pre-clearance connection in YUL recently, would you have any tips for us?

We do have NEXUS and plan to get Antigen tests from Shoppers. I know there is a form the CDC is requiring, so we will have that pre-filled out before we fly.
The flights are early in the day, so I would hope that worst case scenario we can get onto another flight later in the day.

Edit: Just specifying this is a domestic to USA transfer coming from another Canadian airport.