AA 1992 then AA 1954 at Charlotte
St Louis → Charlotte → San Diego
Timetable, Charlotte time
13:29AA 1992 from St Louis at the gate
08:25AA 1954 to San Diego leaves the gate
18 h 56 apart on the timetable, overnight
AA 1954 leaves 18 h 56 after AA 1992 arrives on the timetable: more than half a day, so not a connection we count.