UA 3426 then AA 5205 at Charlotte
Chicago O'Hare → Charlotte → Huntsville
Timetable, Charlotte time
09:46UA 3426 from Chicago O'Hare at the gate
22:00AA 5205 to Huntsville leaves the gate
12 h 14 apart on the timetable
AA 5205 leaves 12 h 14 after UA 3426 arrives on the timetable: more than half a day, so not a connection we count.