AA 153 then KD 218 at O'Hare
Charlotte → Chicago → Anchorage
Timetable, Chicago time
11:42AA 153 from Charlotte at the gate
12:00KD 218 to Anchorage leaves the gate
18 min apart on the timetable
The last days
AA 153 and KD 218 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.