AC 508 then AC 7058 at Toronto Pearson
Chicago O'Hare → Toronto → Montréal
Timetable, Toronto time
19:10AC 508 from Chicago O'Hare at the gate
09:00AC 7058 to Montréal leaves the gate
13 h 50 apart on the timetable, overnight
AC 7058 leaves 13 h 50 after AC 508 arrives on the timetable: more than half a day, so not a connection we count.