AA 1691 then AC 4365 at Newark
Chicago → New York → Richmond
Timetable, New York time
13:30AA 1691 from Chicago at the gate
16:40AC 4365 to Richmond leaves the gate
3 h 10 apart on the timetable
The last days
AA 1691 and AC 4365 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.