AC 7055 then BA 1098 at Toronto Pearson
Montréal → Toronto → London Heathrow
Timetable, Toronto time
08:35AC 7055 from Montréal at the gate
22:25BA 1098 to London Heathrow leaves the gate
13 h 50 apart on the timetable
BA 1098 leaves 13 h 50 after AC 7055 arrives on the timetable: more than half a day, so not a connection we count.