AA 3444 then AA 6238 at DFW
Harlingen → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:31AA 3444 from Harlingen at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 54 apart on the timetable, overnight
AA 6238 leaves 15 h 54 after AA 3444 arrives on the timetable: more than half a day, so not a connection we count.