CI 5345 then UA 3918 at San Francisco
Atlanta → San Francisco → Denver
Timetable, San Francisco time
23:09CI 5345 from Atlanta at the gate
21:45UA 3918 to Denver leaves the gate
22 h 36 apart on the timetable, overnight
UA 3918 leaves 22 h 36 after CI 5345 arrives on the timetable: more than half a day, so not a connection we count.