AA 1938 then AA 3498 at O'Hare
Dallas-Fort Worth → Chicago → Tulsa
Timetable, Chicago time
07:35AA 1938 from Dallas-Fort Worth at the gate
08:10AA 3498 to Tulsa leaves the gate
35 min apart on the timetable
The last days
AA 1938 and AA 3498 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.