UA 3921 then AA 334 at O'Hare
Las Vegas → Chicago → Omaha
Timetable, Chicago time
01:38UA 3921 from Las Vegas at the gate
02:15AA 334 to Omaha leaves the gate
37 min apart on the timetable
The last days
UA 3921 and AA 334 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.