UX 52 then EW 9511 at Madrid
Havana → Madrid → Düsseldorf
Timetable, Madrid time
13:30UX 52 from Havana at the gate
13:10EW 9511 to Düsseldorf leaves the gate
23 h 40 apart on the timetable, overnight
EW 9511 leaves 23 h 40 after UX 52 arrives on the timetable: more than half a day, so not a connection we count.