I'm looking for more information on RTB Bus 351 from Dornbirn to Heerbrugg, Switzerland. It is apparently run by a Swiss company and falls under the Swiss Ostwind transit authority, and not the VVV. If I am reading the website (in German) correctly, VVV day tickets are not accepted. Is this correct? Is the Euregio Tageskarte accepted? Is the Swiss GA / Swiss Pass valid? (the website seems to indicate so, but the route is not listed on the Swiss Travel System's synoptic map)
Any insights appreciated. Thanks!