UA 4774 then B6 8412 at O'Hare
Tucson → Chicago → Boston
Timetable, Chicago time
13:02UA 4774 from Tucson at the gate
16:00B6 8412 to Boston leaves the gate
2 h 58 apart on the timetable
Today
From the airport’s board at 19:47 Chicago time
12:49UA 4774 reached the gate13 min early
16:00B6 8412 due to leave, no estimate yet
3 h 11 between the gates, on these times
The last days
UA 4774 and B6 8412 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.