FR 635 then FR 457 at Dublin
Cardiff → Dublin → Leeds
Timetable, Dublin time
15:25FR 635 from Cardiff at the gate
05:55FR 457 to Leeds leaves the gate
14 h 30 apart on the timetable, overnight
FR 457 leaves 14 h 30 after FR 635 arrives on the timetable: more than half a day, so not a connection we count.