AA 3987 then AA 5506 at Charlotte
Springfield → Charlotte → Memphis
Timetable, Charlotte time
15:38AA 3987 from Springfield at the gate
12:22AA 5506 to Memphis leaves the gate
20 h 44 apart on the timetable, overnight
AA 5506 leaves 20 h 44 after AA 3987 arrives on the timetable: more than half a day, so not a connection we count.