FR 635 then FR 670 at Dublin
Cardiff → Dublin → Birmingham (UK)
Timetable, Dublin time
15:25FR 635 from Cardiff at the gate
13:20FR 670 to Birmingham (UK) leaves the gate
21 h 55 apart on the timetable, overnight
FR 670 leaves 21 h 55 after FR 635 arrives on the timetable: more than half a day, so not a connection we count.