UA 3237 then UA 6145 at Houston
Louisville → Houston → Lafayette
Timetable, Houston time
12:15UA 3237 from Louisville at the gate
16:35UA 6145 to Lafayette leaves the gate
4 h 20 apart on the timetable
The last days
UA 3237 and UA 6145 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.