AC 4531 then UA 1248 at San Francisco
Sacramento → San Francisco → Chicago O'Hare
Timetable, San Francisco time
15:29AC 4531 from Sacramento at the gate
05:00UA 1248 to Chicago O'Hare leaves the gatealso AC 4374, NZ 9300
13 h 31 apart on the timetable, overnight
UA 1248 leaves 13 h 31 after AC 4531 arrives on the timetable: more than half a day, so not a connection we count.