DL 939 then DL 244 at JFK
Los Angeles → New York → Catania
Timetable, New York time
20:59DL 939 from Los Angeles at the gate
17:55DL 244 to Catania leaves the gate
20 h 56 apart on the timetable, overnight
DL 244 leaves 20 h 56 after DL 939 arrives on the timetable: more than half a day, so not a connection we count.