AZ 8951 then FR 4891 at Fiumicino
Manchester → Rome → Catania
Timetable, Rome time
14:30AZ 8951 from Manchester at the gate
12:15FR 4891 to Catania leaves the gate
21 h 45 apart on the timetable, overnight
FR 4891 leaves 21 h 45 after AZ 8951 arrives on the timetable: more than half a day, so not a connection we count.