AA 1858 then AA 2174 at Charlotte
Omaha → Charlotte → Denver
Timetable, Charlotte time
09:24AA 1858 from Omaha at the gate
13:35AA 2174 to Denver leaves the gate
4 h 11 apart on the timetable
The last days
AA 1858 and AA 2174 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.