FR 5307 then FR 332 at Dublin
Killarney → Dublin → London Luton
Timetable, Dublin time
11:20FR 5307 from Killarney at the gate
09:30FR 332 to London Luton leaves the gate
22 h 10 apart on the timetable, overnight
FR 332 leaves 22 h 10 after FR 5307 arrives on the timetable: more than half a day, so not a connection we count.