AA 1922 then AA 6357 at DFW
Las Vegas → Dallas-Fort Worth → St George
Timetable, Dallas-Fort Worth time
19:06AA 1922 from Las Vegas at the gate
18:43AA 6357 to St George leaves the gate
23 h 37 apart on the timetable, overnight
AA 6357 leaves 23 h 37 after AA 1922 arrives on the timetable: more than half a day, so not a connection we count.