WN 4755 then AA 894 at Boston
Nashville → Boston → Chicago O'Hare
Timetable, Boston time
11:15WN 4755 from Nashville at the gate
12:12AA 894 to Chicago O'Hare leaves the gate
57 min apart on the timetable
The last days
WN 4755 and AA 894 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.