DL 188 then DL 836 at Atlanta
Seoul → Atlanta → Phoenix
Timetable, Atlanta time
17:10DL 188 from Seoul at the gate
16:25DL 836 to Phoenix leaves the gate
23 h 15 apart on the timetable, overnight
DL 836 leaves 23 h 15 after DL 188 arrives on the timetable: more than half a day, so not a connection we count.