AA 1922 then AA 766 at DFW
Las Vegas → Dallas-Fort Worth → Tucson
Timetable, Dallas-Fort Worth time
19:06AA 1922 from Las Vegas at the gate
17:42AA 766 to Tucson leaves the gate
22 h 36 apart on the timetable, overnight
AA 766 leaves 22 h 36 after AA 1922 arrives on the timetable: more than half a day, so not a connection we count.