W4 6186 then FR 6974 at Fiumicino
Bilbao → Rome → Barcelona
Timetable, Rome time
15:10W4 6186 from Bilbao at the gate
13:05FR 6974 to Barcelona leaves the gate
21 h 55 apart on the timetable, overnight
FR 6974 leaves 21 h 55 after W4 6186 arrives on the timetable: more than half a day, so not a connection we count.