AZ 1710 then FR 1814 at Fiumicino
Catania → Rome → Porto
Timetable, Rome time
11:45AZ 1710 from Catania at the gate
11:00FR 1814 to Porto leaves the gate
23 h 15 apart on the timetable, overnight
FR 1814 leaves 23 h 15 after AZ 1710 arrives on the timetable: more than half a day, so not a connection we count.