AA 5878 then UA 1963 at Charlotte
Salisbury → Charlotte → Denver
Timetable, Charlotte time
10:40AA 5878 from Salisbury at the gate
08:36UA 1963 to Denver leaves the gate
21 h 56 apart on the timetable, overnight
UA 1963 leaves 21 h 56 after AA 5878 arrives on the timetable: more than half a day, so not a connection we count.