ET 574 then AA 861 at O'Hare
Rome → Chicago → Hartford
Timetable, Chicago time
07:40ET 574 from Rome at the gate
08:21AA 861 to Hartford leaves the gate
41 min apart on the timetable
The last days
ET 574 and AA 861 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.