We are planning our second trip to Italy in March of 2025. Last trip we visited Rome and Florence. This trip we want to visit Naples and Milan. Is there a direct bullet train that could take us from Naples to Milan (or vice versa)? We would probably fly into either city and fly out of the other. I am trying to determine if there is a direct train between the two cities or do we need to make a connection somewhere along the way (like Rome or something). We would prefer not to have to make a connection. How long would it take to travel this distance (how many hours)?
Thank you!