BA 349 then BA 1320 at Heathrow
Nice → London → Aberdeen
Timetable, London time
21:05BA 349 from Nice at the gate
18:20BA 1320 to Aberdeen leaves the gate
21 h 15 apart on the timetable, overnight
BA 1320 leaves 21 h 15 after BA 349 arrives on the timetable: more than half a day, so not a connection we count.