IB 462 then CX 1751 at Madrid
Culleredo → Madrid → Buenos Aires
Timetable, Madrid time
23:00IB 462 from Culleredo at the gatealso LA 1777, VY 5152, AV 6047, BA 7098
12:20CX 1751 to Buenos Aires leaves the gatealso BA 4255, AY 5375
13 h 20 apart on the timetable, overnight
CX 1751 leaves 13 h 20 after IB 462 arrives on the timetable: more than half a day, so not a connection we count.