AA 4099 then DL 9881 at Miami
Omaha → Miami → New York LaGuardia
Timetable, Miami time
10:45AA 4099 from Omaha at the gate
19:20DL 9881 to New York LaGuardia leaves the gate
8 h 35 apart on the timetable
The last days
AA 4099 and DL 9881 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.