From a previous post I had this advice...
"Right now, and I am taking an educated guess on your travel dates, you can buy 4 tickets from Rome Termini to Spiez, Switzerland for 315.60 EUR total. These are nonrefundable train specific tickets, like airline tickets. Leave Roma Termini at 8 am, and get to Spiez at 1:53 pm with a single train change at Milano Centrale. Change time is 24 minutes, so should be comfortable." (Thanks Sam.)
On Sunday when I checked this (on https://www.trainline.eu) it was just as Sam said, but this evening (Thursday) it's not available -- for any dates I've tried. (The Rome --> Milano leg is available, but not the Milano --> Spiez leg.)
Is this likely an issue with trainline.eu? (When I click on the "not available" icon, it gives me details but says Sorry, we can’t sell this ticket. We are just displaying the details instead.
...or am I too late to book tickets for August? I wouldn't think so...
Thanks