AA 3104 then UA 1925 at Charlotte
Miami → Charlotte → Denver
Timetable, Charlotte time
16:21AA 3104 from Miami at the gate
16:20UA 1925 to Denver leaves the gate
23 h 59 apart on the timetable, overnight
UA 1925 leaves 23 h 59 after AA 3104 arrives on the timetable: more than half a day, so not a connection we count.