AA 3002 then UA 4550 at O'Hare
New York LaGuardia → Chicago → Columbia Regional
Timetable, Chicago time
08:59AA 3002 from New York LaGuardia at the gate
21:25UA 4550 to Columbia Regional leaves the gate
12 h 26 apart on the timetable
UA 4550 leaves 12 h 26 after AA 3002 arrives on the timetable: more than half a day, so not a connection we count.