AC 5269 then UA 2279 at San Francisco
Chicago O'Hare → San Francisco → Seattle
Timetable, San Francisco time
16:20AC 5269 from Chicago O'Hare at the gatealso NZ 9325
16:17UA 2279 to Seattle leaves the gatealso AZ 4506, VA 8282, NZ 9406
23 h 57 apart on the timetable, overnight
UA 2279 leaves 23 h 57 after AC 5269 arrives on the timetable: more than half a day, so not a connection we count.