FR 4857 then FR 9612 at Fiumicino
Catania → Rome → Dublin
Timetable, Rome time
12:35FR 4857 from Catania at the gate
05:45FR 9612 to Dublin leaves the gate
17 h 10 apart on the timetable, overnight
FR 9612 leaves 17 h 10 after FR 4857 arrives on the timetable: more than half a day, so not a connection we count.