My concern in the latest win of Milan against Atalanta is the celebration by some players after the match ended. They celebrated like they have won the title already, hope it wont be a "too early" celebration but they fail to win it eventually because they were overconfidence with the situation. The last game of both Milan and Inter can be considered as guaranteed win for both teams but Milan should not underestimate Sassuolo as they can bring a disaster to Milan.
Sometimes self-confidence is not so bad. It would be much worse if the players spent the rest of the time before the last game nervous and mentally exhausting themselves. I think the celebrations of the Milan players are justified as it was the last home match and they had to share their joy with the fans - in any case, this season is extremely good for them and with 99.9% certainty we can say that Milan became the champion.