A3 452 then U2 4501 at Charles de Gaulle
Heraklion → Paris → Nice
Timetable, Paris time
10:45A3 452 from Heraklion at the gate
14:15U2 4501 to Nice leaves the gate
3 h 30 apart on the timetable
Charles de Gaulle’s board gives an arrival time for only about 46% of its flights, so many days show no gate time.
The last days
A3 452 and U2 4501 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.