AC 500 then WS 2712 at Toronto Pearson
Chicago O'Hare → Toronto → Cancún
Timetable, Toronto time
11:27AC 500 from Chicago O'Hare at the gate
09:25WS 2712 to Cancún leaves the gate
21 h 58 apart on the timetable, overnight
WS 2712 leaves 21 h 58 after AC 500 arrives on the timetable: more than half a day, so not a connection we count.