FR 2540 then IB 411 at Madrid
Bucharest → Madrid → Barcelona
Timetable, Madrid time
13:55FR 2540 from Bucharest at the gate
11:25IB 411 to Barcelona leaves the gatealso IB 411S, CX 1839, LL 3011, VY 5031, QR 5095, AV 6089, BA 7130, AA 8613
21 h 30 apart on the timetable, overnight
IB 411 leaves 21 h 30 after FR 2540 arrives on the timetable: more than half a day, so not a connection we count.