AA 1610 then UA 4759 at Denver
Charlotte → Denver → Sioux Falls
Timetable, Denver time
10:27AA 1610 from Charlotte at the gate
09:50UA 4759 to Sioux Falls leaves the gate
23 h 23 apart on the timetable, overnight
UA 4759 leaves 23 h 23 after AA 1610 arrives on the timetable: more than half a day, so not a connection we count.