AA 3250 then UA 8115 at O'Hare
San Francisco → Chicago → Las Vegas
Timetable, Chicago time
13:44AA 3250 from San Francisco at the gate
15:06UA 8115 to Las Vegas leaves the gate
1 h 22 apart on the timetable
The last days
AA 3250 and UA 8115 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.