UA 3450 then AA 5506 at Charlotte
Chicago O'Hare → Charlotte → Memphis
Timetable, Charlotte time
13:42UA 3450 from Chicago O'Hare at the gate
12:22AA 5506 to Memphis leaves the gate
22 h 40 apart on the timetable, overnight
AA 5506 leaves 22 h 40 after UA 3450 arrives on the timetable: more than half a day, so not a connection we count.