FR 6927 then AZ 1781 at Fiumicino
Barcelona → Rome → Palermo
Timetable, Rome time
21:15FR 6927 from Barcelona at the gate
13:15AZ 1781 to Palermo leaves the gate
16 h apart on the timetable, overnight
AZ 1781 leaves 16 h after FR 6927 arrives on the timetable: more than half a day, so not a connection we count.