On the other hand for the Champions League I think the conditions will not be much different even though the possibility for Milan increases but on the other hand the favorite remains Napoli only they need to make some precautionary steps in their scheme so that defeats with quite striking scores like this do not repeat themselves.
Napoli's worries are likely to increase about Milan especially in the Champions League, that's because Milan has the potential to make more of a difference to its Champions League chances.
In that match, Napoli were too weak in defense and they gave Milan a lot of space to take advantage of. Rafael Leão is in great shape, he's really excited about this win at the Stadio Diego Armando Maradona. Thus, Milan managed to get a safe position in the standings with 1 point away from Inter and Roma. Indeed, it is not completely safe, but at least the victory over Napoli will change many things from the player's confidence.
Quite agree with saying Napoli's defense was very poor in this match, they always lost duels like when Diaz managed to outwit two Napoli players and make a comfortable assist for Leao and like when the last goal scored by Alexis Saelemaekers even he outwitted 5 Napoli players at once before managing to score the 4th goal.