BA 1483 then BA 85 at Heathrow
Glasgow → London → Vancouver
Timetable, London time
17:10BA 1483 from Glasgow at the gate
17:05BA 85 to Vancouver leaves the gate
23 h 55 apart on the timetable, overnight
BA 85 leaves 23 h 55 after BA 1483 arrives on the timetable: more than half a day, so not a connection we count.