IB 840 then KL 3324 at Madrid
Athens → Madrid → Lanzarote
Timetable, Madrid time
10:10IB 840 from Athens at the gatealso LA 1511, AT 5307, VY 5466, AA 8833
06:45KL 3324 to Lanzarote leaves the gatealso AF 4832, DL 6772, AM 6836, EY 7581, UX 9073
20 h 35 apart on the timetable, overnight
KL 3324 leaves 20 h 35 after IB 840 arrives on the timetable: more than half a day, so not a connection we count.