AC 4121 then CX 879 at San Francisco
Ontario → San Francisco → Hong Kong
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
11:25CX 879 to Hong Kong leaves the gatealso OM 5879, AA 8932, MH 9199
17 h 35 apart on the timetable, overnight
CX 879 leaves 17 h 35 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.