AA 503 then AA 6238 at DFW
Punta Cana → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
19:50AA 503 from Punta Cana at the gate
08:25AA 6238 to Amarillo leaves the gate
12 h 35 apart on the timetable, overnight
AA 6238 leaves 12 h 35 after AA 503 arrives on the timetable: more than half a day, so not a connection we count.