P4 7576 then BA 762 at Heathrow
Abuja → London → Basel
Timetable, London time
16:30P4 7576 from Abuja at the gate
16:00BA 762 to Basel leaves the gate
23 h 30 apart on the timetable, overnight
BA 762 leaves 23 h 30 after P4 7576 arrives on the timetable: more than half a day, so not a connection we count.