FR 4586 then KL 1512 at Barcelona
Porto → Barcelona → Amsterdam
Timetable, Barcelona time
19:45FR 4586 from Porto at the gate
11:15KL 1512 to Amsterdam leaves the gate
15 h 30 apart on the timetable, overnight
KL 1512 leaves 15 h 30 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.