AA 5679 then AA 2562 at Charlotte
Montréal → Charlotte → St Louis
Timetable, Charlotte time
10:05AA 5679 from Montréal at the gate
22:51AA 2562 to St Louis leaves the gate
12 h 46 apart on the timetable
AA 2562 leaves 12 h 46 after AA 5679 arrives on the timetable: more than half a day, so not a connection we count.