AA 1253 then WN 4357 at San Francisco
Chicago O'Hare → San Francisco → Austin
Timetable, San Francisco time
09:40AA 1253 from Chicago O'Hare at the gatealso QF 4697
09:05WN 4357 to Austin leaves the gate
23 h 25 apart on the timetable, overnight
WN 4357 leaves 23 h 25 after AA 1253 arrives on the timetable: more than half a day, so not a connection we count.