AA 3473 then AA 6238 at DFW
Springfield → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
18:20AA 3473 from Springfield at the gate
08:25AA 6238 to Amarillo leaves the gate
14 h 05 apart on the timetable, overnight
AA 6238 leaves 14 h 05 after AA 3473 arrives on the timetable: more than half a day, so not a connection we count.