BA 1489 then BA 33 at Heathrow
Glasgow → London → Kuala Lumpur
Timetable, London time
21:30BA 1489 from Glasgow at the gate
21:10BA 33 to Kuala Lumpur leaves the gate
23 h 40 apart on the timetable, overnight
BA 33 leaves 23 h 40 after BA 1489 arrives on the timetable: more than half a day, so not a connection we count.