CX 1750 then FB 1403 at Madrid
Buenos Aires → Madrid → Tenerife North
Timetable, Madrid time
05:30CX 1750 from Buenos Aires at the gatealso BA 4252, QR 6919
18:05FB 1403 to Tenerife North leaves the gatealso LA 1641, VY 5224, AV 6030, QR 6995, BA 7229
12 h 35 apart on the timetable
FB 1403 leaves 12 h 35 after CX 1750 arrives on the timetable: more than half a day, so not a connection we count.