AA 3158 then AA 777 at DFW
Austin → Dallas-Fort Worth → Las Vegas
Timetable, Dallas-Fort Worth time
13:08AA 3158 from Austin at the gate
12:14AA 777 to Las Vegas leaves the gate
23 h 06 apart on the timetable, overnight
AA 777 leaves 23 h 06 after AA 3158 arrives on the timetable: more than half a day, so not a connection we count.