[CRConrad]

> In school in Belgium, we learned that Oceania is the continent and not Australia. So for us, would Australia then be the largest island after all?

How weird. (So it's not only Chilean schools that are idiosyncratic in this regard.) To the rest of us, the actual continent -- you know, the biggest contiguous landmass in the region -- is called Australia. Maybe you're just translating Erdteil (Ger; whatever the corresponding concept is in French or Flemish) to the English "continent", and mistranslating too literally? In English "continent" is the land mass, which is definitely Australia. Oceania, as a whole "Erdteil", is more than a continent; it's the sum of the continent of Australia and a whole bunch of islands. (Possibly most of them situated on the same continental shelf? Or not, Idunno.)

French:

> On retrouve ainsi certains systèmes de continents qui considèrent l'Europe et l'Asie comme deux continents, alors que l'Eurasie ne forme qu'une étendue de terre. -- https://fr.wikipedia.org/wiki/Continent

If stuff that is just one actual literal continent can be called two "Erdteile" since forever, another "Erdteil" can consist of a continent plus some other stuff.

West Flemish:

> De meiste eiland'n in de Stiln Oceoan vormn t'hope mè 't continent Australië e weirelddeil die Oceanië wordt genoemd. -- https://vls.wikipedia.org/wiki/Continent

Not the same thing.