UA 751 then AA 4679 at O'Hare
Charlotte → Chicago → Nashville
Timetable, Chicago time
07:26UA 751 from Charlotte at the gate
09:55AA 4679 to Nashville leaves the gate
2 h 29 apart on the timetable
Today
From the airport’s board at 23:33 Chicago time
07:13UA 751 reached the gate13 min early
09:51AA 4679 left the gate4 min early
2 h 38 between the gates
The last days
UA 751 and AA 4679 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.