MU 589 then B6 316 at San Francisco
Shanghai → San Francisco → New York JFK
Timetable, San Francisco time
09:00MU 589 from Shanghai at the gate
08:05B6 316 to New York JFK leaves the gatealso LO 5774, EY 8328, AT 9559
23 h 05 apart on the timetable, overnight
B6 316 leaves 23 h 05 after MU 589 arrives on the timetable: more than half a day, so not a connection we count.