Losing Lukaku in most months of this season is a very big loss for Napoli and Conte will have to change his initial plan for Napoli in this season. He must try different ways to motivate other players making more shots and taking advantage of any chance to try scoring goals for Napoli. If he can get 5 or 10 more goals from other players, Napoli will be able to cover this long absence of Lukaku and this increases their chance of defending Scudetto.
I can’t say that Napoli were lacking something in attack against Cagliari, maybe only in the finishing stage, but sometimes there are matches where it’s just hard to score. The most important thing is that they won. Today Inter and Juventus will play their matches, and if they both win, they’ll also have 6 points. I think Inter should win at home against Udinese, but Genoa could be a tough opponent for Juventus.