EI 3551 then FR 114 at Dublin
Edinburgh → Dublin → London Gatwick
Timetable, Dublin time
10:50EI 3551 from Edinburgh at the gate
08:00FR 114 to London Gatwick leaves the gate
21 h 10 apart on the timetable, overnight
FR 114 leaves 21 h 10 after EI 3551 arrives on the timetable: more than half a day, so not a connection we count.