AZ 619 then FR 4891 at Fiumicino
Washington → Rome → Catania
Timetable, Rome time
07:00AZ 619 from Washington at the gate
22:00FR 4891 to Catania leaves the gate
15 h apart on the timetable
FR 4891 leaves 15 h after AZ 619 arrives on the timetable: more than half a day, so not a connection we count.