AA 2253 then CI 5346 at San Francisco
Chicago O'Hare → San Francisco → Atlanta
Timetable, San Francisco time
16:22AA 2253 from Chicago O'Hare at the gatealso QF 4756
14:10CI 5346 to Atlanta leaves the gate
21 h 48 apart on the timetable, overnight
CI 5346 leaves 21 h 48 after AA 2253 arrives on the timetable: more than half a day, so not a connection we count.