DL 939 then AF 3591 at JFK
Los Angeles → New York → Venezia
Timetable, New York time
20:59DL 939 from Los Angeles at the gate
18:55AF 3591 to Venezia leaves the gate
21 h 56 apart on the timetable, overnight
AF 3591 leaves 21 h 56 after DL 939 arrives on the timetable: more than half a day, so not a connection we count.