W4 6012 then FR 3181 at Fiumicino
Madrid → Rome → Barcelona
Timetable, Rome time
11:55W4 6012 from Madrid at the gate
11:50FR 3181 to Barcelona leaves the gate
23 h 55 apart on the timetable, overnight
FR 3181 leaves 23 h 55 after W4 6012 arrives on the timetable: more than half a day, so not a connection we count.