FR 1815 then FR 9612 at Fiumicino
Porto → Rome → Dublin
Timetable, Rome time
20:40FR 1815 from Porto at the gate
17:35FR 9612 to Dublin leaves the gate
20 h 55 apart on the timetable, overnight
FR 9612 leaves 20 h 55 after FR 1815 arrives on the timetable: more than half a day, so not a connection we count.