Topic: If i have one Nintendo account and i have 2 switch profiles with Splatoon 2. If i link the account with both profiles will they have the same progress or will it be different

I want to know because my brother and I are playing and I don't want him to have the same progress as me.

I might be wrong, but I believe you can't link the same Nintendo account to two profiles at the same time.

What you are asking doesn't make sense.

If you create a separate user account on your Switch, then each user will have their own unique save file (for the vast majority of games).

Okay - one switch with two profiles. Each profile has its own save file. So each progress depends on the time played. -> therefore not the same progress.