KJ 284 then AA 6448 at LAX
Seoul → Los Angeles → San Francisco
Timetable, Los Angeles time
19:50KJ 284 from Seoul at the gate
18:51AA 6448 to San Francisco leaves the gate
23 h 01 apart on the timetable, overnight
AA 6448 leaves 23 h 01 after KJ 284 arrives on the timetable: more than half a day, so not a connection we count.