Any relevant answers to the two questions below would help.
1. I will be travelling from the US to Zurich and will then take a train to Rome. Is it possible to book online train tickets on SBB and apply the Swiss saver flexi pass? Which option should I choose for this? I am hoping that I can book online saying that I have a pass, and buy the pass when I reach Zurich, and then use it on the train. Is this possible?
2. Also, while I am trying to book on SBB, it is not showing any seat number for the trains which require a reservation. It is just showing window or aisle seat reference. Am I not supposed to get a seat number for trains requiring reservation when I book tickets online?