AA 2298 then UA 2189 at O'Hare
Nashville → Chicago → New York LaGuardia
Timetable, Chicago time
08:35AA 2298 from Nashville at the gate
13:00UA 2189 to New York LaGuardia leaves the gate
4 h 25 apart on the timetable
The last days
AA 2298 and UA 2189 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.