(ELI5) when babies are raised with bilingual families, are they learning it as just one jumbled language, or as two separate languages?

Question

Also would it become difficult to discern and seperate them when they join school for example, and interact with people that only speak one

In: 37

Answer 1

Two languages, but they might speak one in the other. My kids are Spanish speakers living and getting educated in France, they know it’s two languages but given the closeness of the languages, they can confuse some false friends. They use “amar” in Spanish (to love) as “aimer” is used in French (to like). So when speaking in Spanish they love or don’t love a lot of stuff.