AA 280 then AA 6238 at DFW
Seoul → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:45AA 280 from Seoul at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 40 apart on the timetable, overnight
AA 6238 leaves 15 h 40 after AA 280 arrives on the timetable: more than half a day, so not a connection we count.