AA 1363 then AA 6238 at DFW
St Louis → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
17:21AA 1363 from St Louis at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 04 apart on the timetable, overnight
AA 6238 leaves 15 h 04 after AA 1363 arrives on the timetable: more than half a day, so not a connection we count.