AC 7885 then AC 8257 at Toronto Pearson
Montréal → Toronto → London (YXU)
Timetable, Toronto time
15:46AC 7885 from Montréal at the gate
13:50AC 8257 to London (YXU) leaves the gate
22 h 04 apart on the timetable, overnight
AC 8257 leaves 22 h 04 after AC 7885 arrives on the timetable: more than half a day, so not a connection we count.