W4 6018 then FR 3946 at Fiumicino
Barcelona → Rome → Palermo
Timetable, Rome time
11:55W4 6018 from Barcelona at the gate
05:45FR 3946 to Palermo leaves the gate
17 h 50 apart on the timetable, overnight
FR 3946 leaves 17 h 50 after W4 6018 arrives on the timetable: more than half a day, so not a connection we count.