AA 3681 then UA 3378 at O'Hare
Springfield Branson National → Chicago → Richmond
Timetable, Chicago time
12:23AA 3681 from Springfield Branson National at the gate
08:30UA 3378 to Richmond leaves the gate
20 h 07 apart on the timetable, overnight
UA 3378 leaves 20 h 07 after AA 3681 arrives on the timetable: more than half a day, so not a connection we count.