AM 21 then DY 1719 at Madrid
Mexico City → Madrid → Oslo
Timetable, Madrid time
15:40AM 21 from Mexico City at the gate
12:20DY 1719 to Oslo leaves the gate
20 h 40 apart on the timetable, overnight
DY 1719 leaves 20 h 40 after AM 21 arrives on the timetable: more than half a day, so not a connection we count.