DL 5688 then UA 3312 at Charlotte
New York LaGuardia → Charlotte → Louisville
Timetable, Charlotte time
11:15DL 5688 from New York LaGuardia at the gate
21:00UA 3312 to Louisville leaves the gate
9 h 45 apart on the timetable
The last days
DL 5688 and UA 3312 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.