UA 33 then DL 939 at LAX
Tokyo Narita → Los Angeles → New York JFK
Timetable, Los Angeles time
10:35UA 33 from Tokyo Narita at the gate
08:30DL 939 to New York JFK leaves the gate
21 h 55 apart on the timetable, overnight
DL 939 leaves 21 h 55 after UA 33 arrives on the timetable: more than half a day, so not a connection we count.