FR 6659 then FR 332 at Dublin
Birmingham (UK) → Dublin → London Luton
Timetable, Dublin time
16:00FR 6659 from Birmingham (UK) at the gate
09:20FR 332 to London Luton leaves the gate
17 h 20 apart on the timetable, overnight
FR 332 leaves 17 h 20 after FR 6659 arrives on the timetable: more than half a day, so not a connection we count.