I think Brazil beats Chile in Brazil's home is something that not surprising at all because in head to head, Brazil never lose against Chile in their home.
Yes, it's not surprising, but Brazil's current form is much better. Ancelotti has fixed the problems in attack, and it's working.
But, it's a big move by Ancelotti to not call Vinicius, Rodrygo, and Neymar because we all know those three players are high skilled players.
Neymar golden age is over, and Brazil isn't short on talent, so it's understandable that Ancelotti didn't call him up. I just learned about Vini call-up. There may be other unknown reasons why Ancelotti didn't call him up to the national team. Rodrygo wasn't even called up in Ancelotti first match. I actually think Ancelotti decision is worth a try, or perhaps he considering the overall performance of Brazilian players at their respective clubs.