AA 1509 then OO 345 at O'Hare
Boston → Chicago → Peoria
Timetable, Chicago time
09:05AA 1509 from Boston at the gate
15:35OO 345 to Peoria leaves the gate
6 h 30 apart on the timetable
The last days
AA 1509 and OO 345 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.