Guys Napoli is a strong team but not from today.
He's been playing at very high levels for years, I hope you didn't wake up today to discover Napoli.
After years of playing at very high quality levels obviously the team has strengthened and gained confidence in their way of playing and obviously it works like a perfect clock.
Spalletti is also really good.

I expect this to happen with Roma too, he's been playing very well for years, then he took on Mourinho as coach who fixed some things and allowed Roma to win the cup.
I expect great things from both Naples and Rome.