TU 752 then AZ 1751 at Fiumicino
Tunis → Rome → Catania
Timetable, Rome time
14:25TU 752 from Tunis at the gate
14:20AZ 1751 to Catania leaves the gate
23 h 55 apart on the timetable, overnight
AZ 1751 leaves 23 h 55 after TU 752 arrives on the timetable: more than half a day, so not a connection we count.