BA 681 then MS 784 at Heathrow
Istanbul → London → Cairo
Timetable, London time
09:50BA 681 from Istanbul at the gate
09:40MS 784 to Cairo leaves the gate
23 h 50 apart on the timetable, overnight
MS 784 leaves 23 h 50 after BA 681 arrives on the timetable: more than half a day, so not a connection we count.