FR 4596 then IB 5240 at Barcelona
Porto → Barcelona → Lanzarote
Timetable, Barcelona time
14:30FR 4596 from Porto at the gate
06:10IB 5240 to Lanzarote leaves the gate
15 h 40 apart on the timetable, overnight
IB 5240 leaves 15 h 40 after FR 4596 arrives on the timetable: more than half a day, so not a connection we count.