FR 573 then I2 1531 at Madrid
Porto → Madrid → La Palma
Timetable, Madrid time
15:55FR 573 from Porto at the gate
11:30I2 1531 to La Palma leaves the gatealso IB 1531, QR 5357, VY 5418, LA 5427, BA 7222
19 h 35 apart on the timetable, overnight
I2 1531 leaves 19 h 35 after FR 573 arrives on the timetable: more than half a day, so not a connection we count.