AA 3157 then AA 6238 at DFW
Houston → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
13:29AA 3157 from Houston at the gate
08:25AA 6238 to Amarillo leaves the gate
18 h 56 apart on the timetable, overnight
AA 6238 leaves 18 h 56 after AA 3157 arrives on the timetable: more than half a day, so not a connection we count.