Stats Question: Steam vs Microsoft

Excuse the newbie question, do the statistics in the profile always depend on the type of account?

I am going to play on Steam, I see that the progress made there is not registered in my statistics when I log in with my Microsoft account here on the official website, which sounds logical.

In the Career tab, will the same thing happen? or the statistics are joined between the two accounts? or how does it work?

Any idea for my question?