AC 857 then AC 7058 at Toronto Pearson
London Heathrow → Toronto → Montréal
Timetable, Toronto time
18:05AC 857 from London Heathrow at the gate
09:00AC 7058 to Montréal leaves the gate
14 h 55 apart on the timetable, overnight
AC 7058 leaves 14 h 55 after AC 857 arrives on the timetable: more than half a day, so not a connection we count.