You’re probably right about Napoli. They’re not having the performance they would have hoped. But I did think they played rather well in their game against Braga despite the fact that their second goal which gave them the win was an own goal. They had some good chances but failed to produce goals.
Napoli will have more careful preparation of opponents against them because they are no longer an underdog like the last season. They can go to round of 16 but going farther will be very difficult. They need to play better than the past season, that I doubt they can do it, and a lot of luckiness. An underdog can make surprise when big clubs are careless but with current position of Napoli, none of big clubs will play against Napoli with careless attitude because Napoli is currently Serie A Champions.
For now the position in the big group phase is likely to get them easily, their rival in group C is only Madrid and although they also have to watch out for Union because of their performance in the Champions League even though the first match lost but they are still quite good in terms of defense but Madrid and Napoli are strong candidates to qualify for the last 16 phase.
Napoli's 2nd match is a bit tough because there is Madrid ready to travel to the Stadio Diego Armando Maradona. Technically they play home for sure with great confidence but when the opponent is Madrid obviously this will be different and it could be that they lose so in this match it would be great if they could get 1 point or force for 3 points but if it is difficult then 1 point will not be a problem I think.