DL 939 then AA 606 at JFK
Los Angeles → New York → Dallas-Fort Worth
Timetable, New York time
20:59DL 939 from Los Angeles at the gate
18:30AA 606 to Dallas-Fort Worth leaves the gate
21 h 31 apart on the timetable, overnight
AA 606 leaves 21 h 31 after DL 939 arrives on the timetable: more than half a day, so not a connection we count.