As part of upcoming Interrail trip, I’m planning to take EC52 from Domodossola to Frankfurt am Main. I am able to book seats online from Brig onwards, but seems there is no way to book Domodossola-Brig.
That is OK, I’m happy to for example stand the 28min trip. But is it so that the obligatory reservation is not needed from Domodossola onwards, even though the start is on Italian side of the border?