FR 4855 then AZ 636 at Fiumicino
Catania → Rome → Houston
Timetable, Rome time
17:10FR 4855 from Catania at the gate
10:20AZ 636 to Houston leaves the gate
17 h 10 apart on the timetable, overnight
AZ 636 leaves 17 h 10 after FR 4855 arrives on the timetable: more than half a day, so not a connection we count.