AA 1927 then AA 2937 at Charlotte
Las Vegas → Charlotte → St Louis
Timetable, Charlotte time
18:38AA 1927 from Las Vegas at the gate
16:28AA 2937 to St Louis leaves the gate
21 h 50 apart on the timetable, overnight
AA 2937 leaves 21 h 50 after AA 1927 arrives on the timetable: more than half a day, so not a connection we count.