BA 945 then BA 758 at Heathrow
Munich → London → Basel
Timetable, London time
12:55BA 945 from Munich at the gate
12:40BA 758 to Basel leaves the gate
23 h 45 apart on the timetable, overnight
BA 758 leaves 23 h 45 after BA 945 arrives on the timetable: more than half a day, so not a connection we count.