EC 3749 then IB 5404 at Barcelona
Milan → Barcelona → London Gatwick
Timetable, Barcelona time
08:40EC 3749 from Milan at the gate
11:30IB 5404 to London Gatwick leaves the gatealso LL 5404, VY 7608
2 h 50 apart on the timetable
The last days
EC 3749 and IB 5404 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.