AA 1239 then G7 3378 at O'Hare
Boston → Chicago → Richmond
Timetable, Chicago time
10:30AA 1239 from Boston at the gate
08:30G7 3378 to Richmond leaves the gate
22 h apart on the timetable, overnight
G7 3378 leaves 22 h after AA 1239 arrives on the timetable: more than half a day, so not a connection we count.