CZ 660 then CZ 8249 at Guangzhou
San Francisco → Guangzhou → HQQ
Timetable, Guangzhou time
10:25CZ 660 from San Francisco at the gate
06:30CZ 8249 to HQQ leaves the gate
20 h 05 apart on the timetable, overnight
CZ 8249 leaves 20 h 05 after CZ 660 arrives on the timetable: more than half a day, so not a connection we count.