AA 5311 then AA 2344 at Charlotte
Lexington → Charlotte → St Louis
Timetable, Charlotte time
07:18AA 5311 from Lexington at the gate
07:05AA 2344 to St Louis leaves the gate
23 h 47 apart on the timetable, overnight
AA 2344 leaves 23 h 47 after AA 5311 arrives on the timetable: more than half a day, so not a connection we count.