9C 6726 then CZ 659 at Guangzhou
Ningbo → Guangzhou → San Francisco
Timetable, Guangzhou time
22:159C 6726 from Ningbo at the gate
19:00CZ 659 to San Francisco leaves the gate
20 h 45 apart on the timetable, overnight
CZ 659 leaves 20 h 45 after 9C 6726 arrives on the timetable: more than half a day, so not a connection we count.