FR 3141 then QR 3573 at Barcelona
Luxembourg → Barcelona → Rome
Timetable, Barcelona time
11:10FR 3141 from Luxembourg at the gate
15:35QR 3573 to Rome leaves the gatealso IB 5342, LL 5342
4 h 25 apart on the timetable
The last days
FR 3141 and QR 3573 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.