W4 6018 then FR 4906 at Fiumicino
Barcelona → Rome → Palermo
Timetable, Rome time
11:40W4 6018 from Barcelona at the gate
11:15FR 4906 to Palermo leaves the gate
23 h 35 apart on the timetable, overnight
FR 4906 leaves 23 h 35 after W4 6018 arrives on the timetable: more than half a day, so not a connection we count.