UA 751 then AA 3384 at O'Hare
Charlotte → Chicago → Champaign
Timetable, Chicago time
07:26UA 751 from Charlotte at the gate
13:48AA 3384 to Champaign leaves the gate
6 h 22 apart on the timetable
Today
From the airport’s board at 23:33 Chicago time
07:13UA 751 reached the gate13 min early
13:43AA 3384 left the gate5 min early
6 h 30 between the gates
The last days
UA 751 and AA 3384 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.