FR 1453 then FR 343 at Dublin
Brussels → Dublin → London Gatwick
Timetable, Dublin time
18:30FR 1453 from Brussels at the gate
14:10FR 343 to London Gatwick leaves the gate
19 h 40 apart on the timetable, overnight
FR 343 leaves 19 h 40 after FR 1453 arrives on the timetable: more than half a day, so not a connection we count.