AA 2544 then AA 6238 at DFW
Knoxville → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:35AA 2544 from Knoxville at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 50 apart on the timetable, overnight
AA 6238 leaves 15 h 50 after AA 2544 arrives on the timetable: more than half a day, so not a connection we count.