AA 5585 then UA 1925 at Charlotte
Louisville → Charlotte → Denver
Timetable, Charlotte time
20:41AA 5585 from Louisville at the gate
16:20UA 1925 to Denver leaves the gate
19 h 39 apart on the timetable, overnight
UA 1925 leaves 19 h 39 after AA 5585 arrives on the timetable: more than half a day, so not a connection we count.