AA 9950 then UA 5444 at O'Hare
Charlotte → Chicago → South Bend
Timetable, Chicago time
08:30AA 9950 from Charlotte at the gate
21:35UA 5444 to South Bend leaves the gate
13 h 05 apart on the timetable
UA 5444 leaves 13 h 05 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.