AC 4533 then UA 8219 at San Francisco
Sacramento → San Francisco → Chicago O'Hare
Timetable, San Francisco time
21:41AC 4533 from Sacramento at the gate
18:10UA 8219 to Chicago O'Hare leaves the gate
20 h 29 apart on the timetable, overnight
UA 8219 leaves 20 h 29 after AC 4533 arrives on the timetable: more than half a day, so not a connection we count.