DL 230 then FR 4856 at Fiumicino
New York JFK → Rome → Catania
Timetable, Rome time
10:45DL 230 from New York JFK at the gate
08:25FR 4856 to Catania leaves the gate
21 h 40 apart on the timetable, overnight
FR 4856 leaves 21 h 40 after DL 230 arrives on the timetable: more than half a day, so not a connection we count.