U2 8754 then U2 8523 at Gatwick
Sharm El Sheikh → London → Porto
Timetable, London time
00:45U2 8754 from Sharm El Sheikh at the gate
16:55U2 8523 to Porto leaves the gate
16 h 10 apart on the timetable
U2 8523 leaves 16 h 10 after U2 8754 arrives on the timetable: more than half a day, so not a connection we count.