AA 1584 then AA 5068 at DFW
Las Vegas → Dallas-Fort Worth → Chattanooga
Timetable, Dallas-Fort Worth time
15:46AA 1584 from Las Vegas at the gate
15:36AA 5068 to Chattanooga leaves the gate
23 h 50 apart on the timetable, overnight
AA 5068 leaves 23 h 50 after AA 1584 arrives on the timetable: more than half a day, so not a connection we count.