FR 4855 then DL 231 at Fiumicino
Catania → Rome → New York JFK
Timetable, Rome time
19:35FR 4855 from Catania at the gate
12:55DL 231 to New York JFK leaves the gate
17 h 20 apart on the timetable, overnight
DL 231 leaves 17 h 20 after FR 4855 arrives on the timetable: more than half a day, so not a connection we count.