AA 1992 then AA 1977 at Charlotte
St Louis → Charlotte → San Antonio
Timetable, Charlotte time
13:14AA 1992 from St Louis at the gate
10:20AA 1977 to San Antonio leaves the gate
21 h 06 apart on the timetable, overnight
AA 1977 leaves 21 h 06 after AA 1992 arrives on the timetable: more than half a day, so not a connection we count.