I have been looking at the train schedule from Orvieto to Roma, and sometimes it says Rome Termini & Rome Tibertina? Is this two different stations? For example, the train leaves at 8:30am and arrives in Rome at 9:30am and it lists both stations. Does this mean that two trains leave Orvieto at the same time going to different stations? If not, how could one train arrive two places at once? I am confused!!!!