DL 4057 then DL 979 at LAX
Phoenix Sky Harbor → Los Angeles → New York JFK
Timetable, Los Angeles time
08:00DL 4057 from Phoenix Sky Harbor at the gate
07:25DL 979 to New York JFK leaves the gate
23 h 25 apart on the timetable, overnight
DL 979 leaves 23 h 25 after DL 4057 arrives on the timetable: more than half a day, so not a connection we count.