AA 3434 then AA 1948 at O'Hare
Bloomington-Normal → Chicago → San Francisco
Timetable, Chicago time
06:10AA 3434 from Bloomington-Normal at the gate
10:30AA 1948 to San Francisco leaves the gate
4 h 20 apart on the timetable
The last days
AA 3434 and AA 1948 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.