FR 635 then FR 9611 at Dublin
Cardiff → Dublin → Rome
Timetable, Dublin time
09:35FR 635 from Cardiff at the gate
06:50FR 9611 to Rome leaves the gate
21 h 15 apart on the timetable, overnight
FR 9611 leaves 21 h 15 after FR 635 arrives on the timetable: more than half a day, so not a connection we count.