AA 4344 then AA 2009 at O'Hare
Memphis → Chicago → Nashville
Timetable, Chicago time
12:41AA 4344 from Memphis at the gate
13:10AA 2009 to Nashville leaves the gate
29 min apart on the timetable
The last days
AA 4344 and AA 2009 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.