The "Main Solutions" section shows:

• all the travel solutions related to Frecce, Intercity and Regional train services, which do not require a change of trains for the entire journey from departure to arrival station;
• travel solutions involving a change that require the use of connecting trains (Frecce - Intercity; Intercity - Regional; Frecce - Regional), with the number of changes not exceeding two, selected on the basis of the following criteria: duration of journey, number of changes and distance travelled.
In order to maintain correct operation and usability of the system, the search function may not include travel solutions with a change, where departure is scheduled within 15 minutes before or after the departure of a train of the same type.
The full timetable is available here.