AA 9950 then UA 2487 at O'Hare
Charlotte → Chicago → Grand Rapids
Timetable, Chicago time
08:30AA 9950 from Charlotte at the gate
21:50UA 2487 to Grand Rapids leaves the gate
13 h 20 apart on the timetable
UA 2487 leaves 13 h 20 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.