UA 1494 then AA 4158 at DFW
Newark → Dallas-Fort Worth → Louisville
Timetable, Dallas-Fort Worth time
09:56UA 1494 from Newark at the gate
13:27AA 4158 to Louisville leaves the gate
3 h 31 apart on the timetable
The last days
UA 1494 and AA 4158 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.