AC 7058 then AC 1884 at Montréal
Toronto Pearson → Montréal → Cancún
Timetable, Montréal time
23:56AC 7058 from Toronto Pearson at the gate
17:55AC 1884 to Cancún leaves the gate
17 h 59 apart on the timetable, overnight
AC 1884 leaves 17 h 59 after AC 7058 arrives on the timetable: more than half a day, so not a connection we count.