BA 1349 then BA 398 at Heathrow
Saint Helier → London → Cairo
Timetable, London time
16:20BA 1349 from Saint Helier at the gate
15:25BA 398 to Cairo leaves the gate
23 h 05 apart on the timetable, overnight
BA 398 leaves 23 h 05 after BA 1349 arrives on the timetable: more than half a day, so not a connection we count.