UA 543 then CI 5346 at San Francisco
Chicago O'Hare → San Francisco → Atlanta
Timetable, San Francisco time
13:30UA 543 from Chicago O'Hare at the gatealso AC 4163, VA 8089, NZ 9321
12:40CI 5346 to Atlanta leaves the gate
23 h 10 apart on the timetable, overnight
CI 5346 leaves 23 h 10 after UA 543 arrives on the timetable: more than half a day, so not a connection we count.