FR 809 then FR 120 at Dublin
Edinburgh → Dublin → London Gatwick
Timetable, Dublin time
14:50FR 809 from Edinburgh at the gate
11:40FR 120 to London Gatwick leaves the gate
20 h 50 apart on the timetable, overnight
FR 120 leaves 20 h 50 after FR 809 arrives on the timetable: more than half a day, so not a connection we count.