BA 397 then BA 1384 at Heathrow
Cairo → London → Manchester
Timetable, London time
21:05BA 397 from Cairo at the gate
20:30BA 1384 to Manchester leaves the gate
23 h 25 apart on the timetable, overnight
BA 1384 leaves 23 h 25 after BA 397 arrives on the timetable: more than half a day, so not a connection we count.