UA 5839 then DL 991 at LAX
Arcata → Los Angeles → New York JFK
Timetable, Los Angeles time
11:55UA 5839 from Arcata at the gate
11:25DL 991 to New York JFK leaves the gate
23 h 30 apart on the timetable, overnight
DL 991 leaves 23 h 30 after UA 5839 arrives on the timetable: more than half a day, so not a connection we count.