AA 9928 then AA 4275 at O'Hare
New York LaGuardia → Chicago → Columbia Metropolitan
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
20:46AA 4275 to Columbia Metropolitan leaves the gate
14 h 01 apart on the timetable
AA 4275 leaves 14 h 01 after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.