The list of long-distance bus connections within Austria is getting shorter and shorter, because after... Setting of Vienna-Klagenfurt Graz-Linz was also abandoned by Blaguss Reisen.
The Graz-Salzburg route was abandoned some time ago. This means that within Austria there are only the Flixbus routes from Graz to Vienna and Vienna-Schwechat Airport. The Air Liner bus, which was formally a long-distance bus despite the short route, was also temporarily stopped at the beginning of the corona pandemic and then finally given up.