CI 5345 then UA 8219 at San Francisco
Atlanta → San Francisco → Chicago O'Hare
Timetable, San Francisco time
23:09CI 5345 from Atlanta at the gate
18:10UA 8219 to Chicago O'Hare leaves the gate
19 h 01 apart on the timetable, overnight
UA 8219 leaves 19 h 01 after CI 5345 arrives on the timetable: more than half a day, so not a connection we count.