EI 393 then FR 337 at Dublin
Hamburg → Dublin → London Luton
Timetable, Dublin time
14:30EI 393 from Hamburg at the gate
10:45FR 337 to London Luton leaves the gate
20 h 15 apart on the timetable, overnight
FR 337 leaves 20 h 15 after EI 393 arrives on the timetable: more than half a day, so not a connection we count.