FR 7851 then FR 670 at Dublin
Cardiff → Dublin → Birmingham (UK)
Timetable, Dublin time
00:50FR 7851 from Cardiff at the gate
15:05FR 670 to Birmingham (UK) leaves the gate
14 h 15 apart on the timetable
FR 670 leaves 14 h 15 after FR 7851 arrives on the timetable: more than half a day, so not a connection we count.