FR 4855 then AZ 640 at Fiumicino
Catania → Rome → San Francisco
Timetable, Rome time
19:35FR 4855 from Catania at the gate
09:10AZ 640 to San Francisco leaves the gate
13 h 35 apart on the timetable, overnight
AZ 640 leaves 13 h 35 after FR 4855 arrives on the timetable: more than half a day, so not a connection we count.