CM 2528 then UA 857 at San Francisco
Ontario → San Francisco → Shanghai
Timetable, San Francisco time
20:10CM 2528 from Ontario at the gatealso AC 4112
12:55UA 857 to Shanghai leaves the gatealso CA 7210
16 h 45 apart on the timetable, overnight
UA 857 leaves 16 h 45 after CM 2528 arrives on the timetable: more than half a day, so not a connection we count.