AA 2906 then UA 4405 at O'Hare
Hartford → Chicago → Springfield Branson National
Timetable, Chicago time
09:05AA 2906 from Hartford at the gate
21:20UA 4405 to Springfield Branson National leaves the gate
12 h 15 apart on the timetable
UA 4405 leaves 12 h 15 after AA 2906 arrives on the timetable: more than half a day, so not a connection we count.