UA 231 then AA 1879 at Charlotte
Denver → Charlotte → Orlando
Timetable, Charlotte time
15:14UA 231 from Denver at the gate
14:13AA 1879 to Orlando leaves the gate
22 h 59 apart on the timetable, overnight
AA 1879 leaves 22 h 59 after UA 231 arrives on the timetable: more than half a day, so not a connection we count.