When I try to book a ticket on the SBB website from Visp to Milan, I cannot find a “Swiss Travel Pass” option for this route, but some people say I can select GA 2nd class instead. I am not sure if that is correct.
If I have to buy a separate ticket from Domodossola to Milan, I see that I must select a seat. I am therefore concerned that I would be seated in one seat from Visp to Domodossola and then have to change seats on the Domodossola–Milan segment.