DL 188 then DL 9970 at Atlanta
Seoul → Atlanta → Los Angeles
Timetable, Atlanta time
17:10DL 188 from Seoul at the gate
17:01DL 9970 to Los Angeles leaves the gate
23 h 51 apart on the timetable, overnight
DL 9970 leaves 23 h 51 after DL 188 arrives on the timetable: more than half a day, so not a connection we count.