MU 589 then TP 4392 at San Francisco
Shanghai → San Francisco → Boston
Timetable, San Francisco time
09:00MU 589 from Shanghai at the gate
22:10TP 4392 to Boston leaves the gate
13 h 10 apart on the timetable
TP 4392 leaves 13 h 10 after MU 589 arrives on the timetable: more than half a day, so not a connection we count.