FR 2540 then IB 409 at Madrid
Bucharest → Madrid → Barcelona
Timetable, Madrid time
13:55FR 2540 from Bucharest at the gate
10:25IB 409 to Barcelona leaves the gatealso IB 409S, LA 1624, CX 1827, LL 3009, VY 5116, AV 6078, BA 7129, QR 7246, AA 8727
20 h 30 apart on the timetable, overnight
IB 409 leaves 20 h 30 after FR 2540 arrives on the timetable: more than half a day, so not a connection we count.