AA 4129 then UA 3378 at O'Hare
Springfield Branson National → Chicago → Richmond
Timetable, Chicago time
09:10AA 4129 from Springfield Branson National at the gate
08:30UA 3378 to Richmond leaves the gate
23 h 20 apart on the timetable, overnight
UA 3378 leaves 23 h 20 after AA 4129 arrives on the timetable: more than half a day, so not a connection we count.