AA 6423 then KG 576 at O'Hare
Lincoln → Chicago → Denver
Timetable, Chicago time
07:58AA 6423 from Lincoln at the gate
18:00KG 576 to Denver leaves the gate
10 h 02 apart on the timetable
The last days
AA 6423 and KG 576 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.