AA 3839 then AA 6238 at DFW
Bismarck → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:44AA 3839 from Bismarck at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 41 apart on the timetable, overnight
AA 6238 leaves 15 h 41 after AA 3839 arrives on the timetable: more than half a day, so not a connection we count.