AA 1922 then AA 3947 at DFW
Las Vegas → Dallas-Fort Worth → Houston
Timetable, Dallas-Fort Worth time
19:06AA 1922 from Las Vegas at the gate
17:26AA 3947 to Houston leaves the gate
22 h 20 apart on the timetable, overnight
AA 3947 leaves 22 h 20 after AA 1922 arrives on the timetable: more than half a day, so not a connection we count.