FR 6927 then FR 1814 at Fiumicino
Barcelona → Rome → Porto
Timetable, Rome time
18:40FR 6927 from Barcelona at the gate
07:45FR 1814 to Porto leaves the gate
13 h 05 apart on the timetable, overnight
FR 1814 leaves 13 h 05 after FR 6927 arrives on the timetable: more than half a day, so not a connection we count.