AA 4968 then UA 4405 at O'Hare
Birmingham (Alabama) → Chicago → Springfield Branson National
Timetable, Chicago time
09:00AA 4968 from Birmingham (Alabama) at the gate
21:20UA 4405 to Springfield Branson National leaves the gate
12 h 20 apart on the timetable
UA 4405 leaves 12 h 20 after AA 4968 arrives on the timetable: more than half a day, so not a connection we count.