FR 1949 then FR 120 at Dublin
Luxembourg → Dublin → London Gatwick
Timetable, Dublin time
19:15FR 1949 from Luxembourg at the gate
16:55FR 120 to London Gatwick leaves the gate
21 h 40 apart on the timetable, overnight
FR 120 leaves 21 h 40 after FR 1949 arrives on the timetable: more than half a day, so not a connection we count.