AA 1977 then AA 2937 at Charlotte
San Antonio → Charlotte → St Louis
Timetable, Charlotte time
17:10AA 1977 from San Antonio at the gate
16:28AA 2937 to St Louis leaves the gate
23 h 18 apart on the timetable, overnight
AA 2937 leaves 23 h 18 after AA 1977 arrives on the timetable: more than half a day, so not a connection we count.