AA 5176 then AA 726 at Charlotte
Atlanta (ATL) → Charlotte → Toronto
Timetable, Charlotte time
08:20AA 5176 from Atlanta (ATL) at the gate
20:40AA 726 to Toronto leaves the gate
12 h 20 apart on the timetable
AA 726 leaves 12 h 20 after AA 5176 arrives on the timetable: more than half a day, so not a connection we count.