AA 1253 then AS 2486 at San Francisco
Chicago O'Hare → San Francisco → Los Angeles
Timetable, San Francisco time
09:40AA 1253 from Chicago O'Hare at the gatealso QF 4697
06:00AS 2486 to Los Angeles leaves the gate
20 h 20 apart on the timetable, overnight
AS 2486 leaves 20 h 20 after AA 1253 arrives on the timetable: more than half a day, so not a connection we count.