KE 23 then WN 4357 at San Francisco
Seoul → San Francisco → Austin
Timetable, San Francisco time
09:35KE 23 from Seoul at the gatealso DL 7860
09:05WN 4357 to Austin leaves the gate
23 h 30 apart on the timetable, overnight
WN 4357 leaves 23 h 30 after KE 23 arrives on the timetable: more than half a day, so not a connection we count.