AA 2761 then UA 3378 at O'Hare
Seattle (SEA) → Chicago → Richmond
Timetable, Chicago time
12:26AA 2761 from Seattle (SEA) at the gate
08:30UA 3378 to Richmond leaves the gate
20 h 04 apart on the timetable, overnight
UA 3378 leaves 20 h 04 after AA 2761 arrives on the timetable: more than half a day, so not a connection we count.