AA 9928 then UA 4479 at O'Hare
New York LaGuardia → Chicago → Huntsville
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
19:50UA 4479 to Huntsville leaves the gate
13 h 05 apart on the timetable
UA 4479 leaves 13 h 05 after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.