AA 2586 then AA 6238 at DFW
Tucson → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:24AA 2586 from Tucson at the gate
08:25AA 6238 to Amarillo leaves the gate
16 h 01 apart on the timetable, overnight
AA 6238 leaves 16 h 01 after AA 2586 arrives on the timetable: more than half a day, so not a connection we count.