DL 336 then AA 2536 at JFK
Denver → New York → Las Vegas
Timetable, New York time
12:47DL 336 from Denver at the gate
12:45AA 2536 to Las Vegas leaves the gate
23 h 58 apart on the timetable, overnight
AA 2536 leaves 23 h 58 after DL 336 arrives on the timetable: more than half a day, so not a connection we count.