I think Juventus' defense can still be said to be quite good, they are still recorded as the second best team in conceding goals and have only conceded 7 goals until the last week in Serie A this season. It's just that they can't maintain the advantage they have gained, or they can't take advantage of the momentum which should have allowed them to win. This is clearly something they have to evaluate quickly, because if it continues like this then they will be eliminated from the competition because they can't win every match they play. Now they actually have good capital, they only need to do a few little touches so that their performance can be even more optimal.
One of the best defenses in Serie A, which has conceded 6 goals in two matches, sounds very dubious. Their defense is very good, but a few matches are not enough to determine their reliability, and now it is obvious that as soon as they get carried away with attack, their defense becomes less reliable. Unfortunately, they lost points in the match with Parma, and thus allowed Atalanta to overtake them, and Napoli is already ahead of them by 6 points, Inter by 3, I do not think they will be able to compete for the Scudetto.