IB 5411 then QR 3566 at Barcelona
London Gatwick → Barcelona → Rome
Timetable, Barcelona time
18:55IB 5411 from London Gatwick at the gatealso LL 5411, VY 7615, BA 8069
10:05QR 3566 to Rome leaves the gate
15 h 10 apart on the timetable, overnight
QR 3566 leaves 15 h 10 after IB 5411 arrives on the timetable: more than half a day, so not a connection we count.