If I buy a ticket online in advance for an Italian regional train from city A to city B on 20/05/2019, at 06:00, on train 1234.
Q1: If I were to miss the 06:00 train, is it correct to assume that I can simply take one of the next few trains (e.g. 07:00 or 08:00) as long as it's within the 4-hour time frame (06:00 - 10:00).
Q2: Do I have to complete my journey (start to finish) within this time frame 06:00 - 10:00, or just the boarding time has to meet this requirement?