AA 1681 then AA 1747 at Miami
Knoxville → Miami → Austin
Timetable, Miami time
08:16AA 1681 from Knoxville at the gate
13:41AA 1747 to Austin leaves the gate
5 h 25 apart on the timetable
The last days
AA 1681 and AA 1747 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.