FR 6927 then W4 6047 at Fiumicino
Barcelona → Rome → Porto
Timetable, Rome time
18:40FR 6927 from Barcelona at the gate
11:50W4 6047 to Porto leaves the gate
17 h 10 apart on the timetable, overnight
W4 6047 leaves 17 h 10 after FR 6927 arrives on the timetable: more than half a day, so not a connection we count.