AA 1610 then AA 5599 at Charlotte
Denver → Charlotte → Springfield
Timetable, Charlotte time
16:29AA 1610 from Denver at the gate
15:36AA 5599 to Springfield leaves the gate
23 h 07 apart on the timetable, overnight
AA 5599 leaves 23 h 07 after AA 1610 arrives on the timetable: more than half a day, so not a connection we count.