BA 1499 then BA 932 at Heathrow
Glasgow → London → Düsseldorf
Timetable, London time
09:50BA 1499 from Glasgow at the gate
09:15BA 932 to Düsseldorf leaves the gate
23 h 25 apart on the timetable, overnight
BA 932 leaves 23 h 25 after BA 1499 arrives on the timetable: more than half a day, so not a connection we count.