Besides that, Chelsea got a little bit benefited from the referee due to the violation which I think make mentally Milan down from the beginning, plus Giroud's performance is not good also, he should be able to set goals after that, because he looks free without any Chelsea player around. So, with the winning, I think Chelsea has enough confidence to continue to 2nd round, They isn't good on premier league which I think they focusing only for Champion League.
There is a little oddity behind the red card received by Fikayo Tomori in my opinion. He (Tomori) clearly bothered Mason Mount and deservedly the referee considered a foul so the penalty was the right decision to be given. In our opinion, Daniel Siebert should have punished Tomori for a foul made with a yellow card. But the German referee's decision must still be accepted and the victory belongs to Chelsea.
In another match, Maccabi Haifa managed to experience how to win in the Champions League group stage after 20 years defeating Manchester United. The success of Maccabi defeating Juventus with a score of 2-0 became their first win in Group H. Juventus' defeat made them worse off this season.