AA 6356 then AA 6238 at DFW
St George → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
12:02AA 6356 from St George at the gate
08:25AA 6238 to Amarillo leaves the gate
20 h 23 apart on the timetable, overnight
AA 6238 leaves 20 h 23 after AA 6356 arrives on the timetable: more than half a day, so not a connection we count.