FR 817 then FR 343 at Dublin
Edinburgh → Dublin → London Gatwick
Timetable, Dublin time
13:15FR 817 from Edinburgh at the gate
09:10FR 343 to London Gatwick leaves the gate
19 h 55 apart on the timetable, overnight
FR 343 leaves 19 h 55 after FR 817 arrives on the timetable: more than half a day, so not a connection we count.