IB 306 then EW 9511 at Madrid
Monterrey → Madrid → Düsseldorf
Timetable, Madrid time
13:50IB 306 from Monterrey at the gatealso BA 7180
13:10EW 9511 to Düsseldorf leaves the gate
23 h 20 apart on the timetable, overnight
EW 9511 leaves 23 h 20 after IB 306 arrives on the timetable: more than half a day, so not a connection we count.