I am planning on leaving early from Naples to Pisa for a half day visit before taking a train into Florence for the night. However, I only notice one train from Naples to Pisa at 7:30 in the morning, and no available trains from Pisa to Florence in the evening for my date in September on the Trenitalia website. I'm concerned that this will be an issue. Will more trains be scheduled between these cities, or is this a less common train route? I'm asking because it seems that other train schedules are listing plenty of trains in September between other major cities already.
On a secondary note, I see that the same thing happening when I try Pisa to Siena and vice versa. All scheduled trains show N/A even for June dates. Is this just a problem with the website? Thanks for any help!