AA 41 then AA 3762 at O'Hare
Barcelona → Chicago → Baltimore
Timetable, Chicago time
14:05AA 41 from Barcelona at the gate
14:44AA 3762 to Baltimore leaves the gate
39 min apart on the timetable
The last days
AA 41 and AA 3762 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.