AA 1922 then AA 3877 at DFW
Las Vegas → Dallas-Fort Worth → Austin
Timetable, Dallas-Fort Worth time
19:06AA 1922 from Las Vegas at the gate
17:15AA 3877 to Austin leaves the gate
22 h 09 apart on the timetable, overnight
AA 3877 leaves 22 h 09 after AA 1922 arrives on the timetable: more than half a day, so not a connection we count.