AA 2614 then UA 3378 at O'Hare
San Francisco → Chicago → Richmond
Timetable, Chicago time
12:29AA 2614 from San Francisco at the gate
08:30UA 3378 to Richmond leaves the gate
20 h 01 apart on the timetable, overnight
UA 3378 leaves 20 h 01 after AA 2614 arrives on the timetable: more than half a day, so not a connection we count.