DL 939 then WS 1681 at JFK
Los Angeles → New York → Calgary
Timetable, New York time
20:59DL 939 from Los Angeles at the gate
17:30WS 1681 to Calgary leaves the gate
20 h 31 apart on the timetable, overnight
WS 1681 leaves 20 h 31 after DL 939 arrives on the timetable: more than half a day, so not a connection we count.