AC 7041 then AC 8644 at Montréal
Washington → Montréal → New York LaGuardia
Timetable, Montréal time
00:07AC 7041 from Washington at the gate
17:35AC 8644 to New York LaGuardia leaves the gate
17 h 28 apart on the timetable
AC 8644 leaves 17 h 28 after AC 7041 arrives on the timetable: more than half a day, so not a connection we count.