QR 3710 then IB 424 at Barcelona
Paris Charles de Gaulle → Barcelona → Madrid
Timetable, Barcelona time
23:35QR 3710 from Paris Charles de Gaulle at the gatealso LL 5455, VY 8063
21:15IB 424 to Madrid leaves the gatealso IB 424S, LA 1589, LL 3024, VY 5100, AY 5576, AV 6173, BA 7084, QR 8067
21 h 40 apart on the timetable, overnight
IB 424 leaves 21 h 40 after QR 3710 arrives on the timetable: more than half a day, so not a connection we count.