AA 9950 then UA 2727 at O'Hare
Charlotte → Chicago → Wichita
Timetable, Chicago time
08:30AA 9950 from Charlotte at the gate
21:27UA 2727 to Wichita leaves the gate
12 h 57 apart on the timetable
UA 2727 leaves 12 h 57 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.