CI 5345 then UA 2837 at San Francisco
Atlanta → San Francisco → Washington
Timetable, San Francisco time
04:27CI 5345 from Atlanta at the gate
23:20UA 2837 to Washington leaves the gate
18 h 53 apart on the timetable
UA 2837 leaves 18 h 53 after CI 5345 arrives on the timetable: more than half a day, so not a connection we count.