On 6/21 I am flying Alitalia MXP-FCO-JFK and then DL from JFK-DCA on an award ticket. There was a schedule change over a month ago leaving me with only 1h34m to clear immigration/customs and schlep from T1 to the end of the T4 concourse. Per the Wiki I am 11 minutes shy of the MCT. I called DL last night and was told that the connection is legal.

I will be in business class with no checked luggage and I have Global Entry/Precheck, so I suppose making the connection is in my favor, but I'm still a little concerned. The next DCA flight is almost 6 hours later. I wouldn't mind if they put me in a taxi and sent me over to LGA, but I imagine they won't do this if their computer is showing it as a legal connection. I may try calling and speaking to a different agent, but I want to see if people think I should just leave the reservation as-is and deal with a reaccom on the day of the flight if I misconnect.