AA 4751 then AA 2311 at O'Hare
Knoxville → Chicago → Las Vegas
Timetable, Chicago time
08:39AA 4751 from Knoxville at the gate
18:53AA 2311 to Las Vegas leaves the gate
10 h 14 apart on the timetable
The last days
AA 4751 and AA 2311 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.