FR 4855 then AZ 1781 at Fiumicino
Catania → Rome → Palermo
Timetable, Rome time
23:59FR 4855 from Catania at the gate
13:15AZ 1781 to Palermo leaves the gate
13 h 16 apart on the timetable, overnight
AZ 1781 leaves 13 h 16 after FR 4855 arrives on the timetable: more than half a day, so not a connection we count.