UA 5836 then DL 991 at LAX
Phoenix Sky Harbor → Los Angeles → New York JFK
Timetable, Los Angeles time
12:05UA 5836 from Phoenix Sky Harbor at the gate
11:25DL 991 to New York JFK leaves the gate
23 h 20 apart on the timetable, overnight
DL 991 leaves 23 h 20 after UA 5836 arrives on the timetable: more than half a day, so not a connection we count.