FR 4892 then AZ 1677 at Fiumicino
Catania → Rome → Firenze
Timetable, Rome time
17:15FR 4892 from Catania at the gate
13:50AZ 1677 to Firenze leaves the gate
20 h 35 apart on the timetable, overnight
AZ 1677 leaves 20 h 35 after FR 4892 arrives on the timetable: more than half a day, so not a connection we count.