AA 3624 then AA 579 at DFW
Springfield → Dallas-Fort Worth → Charlotte
Timetable, Dallas-Fort Worth time
08:56AA 3624 from Springfield at the gate
21:00AA 579 to Charlotte leaves the gate
12 h 04 apart on the timetable
AA 579 leaves 12 h 04 after AA 3624 arrives on the timetable: more than half a day, so not a connection we count.