BA 779 then BA 762 at Heathrow
Stockholm → London → Basel
Timetable, London time
17:10BA 779 from Stockholm at the gate
17:05BA 762 to Basel leaves the gate
23 h 55 apart on the timetable, overnight
BA 762 leaves 23 h 55 after BA 779 arrives on the timetable: more than half a day, so not a connection we count.