Regarding Napoli who failed to maximize the first leg because they played at home, for me that was a normal result and there was no oddity whatsoever. Because after all, a draw is still a good result for Napoli because yes, in the predictions at least Napoli is quite doubtful and is predicted to lose . But yes, in reality Napoli managed to score an equalizer after conceding first in the 60th minute and in this way, Napoli managed to get a good result in this match. Because yes, considering Napoli's quality and performance at this moment, I don't think there is a good chance for Napoli and I am sure that Barcelona will still qualify anyway.
Maybe it's a natural thing, you're right about that, but this result will make it more difficult for Napoli in the second leg, because now they will play in front of the Barcelona fans who maybe if they are not too prepared it will make their mentality decrease, but yes at least they didn't lose.
The problem is when Napoli play like in this first leg, then I'm sure they will really lose in the second leg later. in the first leg they were very rare to be able to create opportunities even 1 goal they could create I noted from the only open opportunity they got. The results of this first leg make Barcelona more favored and their chances in my opinion were greater before this first leg took place.
In my opinion there is nothing they can do about it and it is what it is. I am putting it this way because on the one hand they could have been down a few goals because for the most part of the early and mid-game, Barcelona was pushing them against a wall and they barely had space to enfold their own game. I was quite surprise as it was a home game for them and I thought this is their chance to have a level playing field with Barcelona and to show their own best and maybe win that game. That would have put them into a position for their beloved counter attack game in the Camp Nou. It's never good to allow Barcelona to have the ball the time, but still Napoli is a strong counter attack team and they could have used that strength to make the little miracle happen in Spain.
But now I think the odds for Napoli to make it into the next round are more like 25:75. If Barcelona plays the same and has the advantage of the Camp Nou crowd, it would really have to be an awful day for them to allow Napoli to get away with it.