AA 3299 then WN 921 at Phoenix
Burbank → Phoenix → Chicago Midway
Timetable, Phoenix time
11:46AA 3299 from Burbank at the gate
12:20WN 921 to Chicago Midway leaves the gate
34 min apart on the timetable
The last days
AA 3299 and WN 921 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.