AC 4121 then UA 2492 at San Francisco
Ontario → San Francisco → Spokane
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gatealso UA 5483
16:30UA 2492 to Spokane leaves the gatealso NZ 9459
22 h 40 apart on the timetable, overnight
UA 2492 leaves 22 h 40 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.