AA 1639 then DL 972 at LAX
Dallas-Fort Worth → Los Angeles → New York JFK
Timetable, Los Angeles time
08:38AA 1639 from Dallas-Fort Worth at the gate
08:25DL 972 to New York JFK leaves the gate
23 h 47 apart on the timetable, overnight
DL 972 leaves 23 h 47 after AA 1639 arrives on the timetable: more than half a day, so not a connection we count.