AS 3159 then UA 3756 at LAX
Redmond → Los Angeles → Tucson
Timetable, Los Angeles time
09:40AS 3159 from Redmond at the gate
10:15UA 3756 to Tucson leaves the gate
35 min apart on the timetable
The last days
AS 3159 and UA 3756 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.