QR 3654 then IB 422 at Barcelona
Nantes → Barcelona → Madrid
Timetable, Barcelona time
17:20QR 3654 from Nantes at the gate
19:55IB 422 to Madrid leaves the gatealso LA 1588, CX 1820, LL 3022, VY 5096, AV 6149, QR 8069
2 h 35 apart on the timetable
The last days
QR 3654 and IB 422 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.