MU 587 then DL 747 at JFK
Shanghai → New York → Los Angeles
Timetable, New York time
13:25MU 587 from Shanghai at the gate
11:00DL 747 to Los Angeles leaves the gate
21 h 35 apart on the timetable, overnight
DL 747 leaves 21 h 35 after MU 587 arrives on the timetable: more than half a day, so not a connection we count.