IB 2628 then IB 5418 at Barcelona
New York JFK → Barcelona → London Gatwick
Timetable, Barcelona time
13:10IB 2628 from New York JFK at the gatealso LL 2628, QR 5373, AY 5394, AA 8794
18:00IB 5418 to London Gatwick leaves the gatealso LL 5418, VY 7622
4 h 50 apart on the timetable
The last days
IB 2628 and IB 5418 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.