Thanks to unnamed friends and Neobie, Slowhatch, and walkingpneumonia who helped puzzle this out!
We can now say with some certainty:
India was leg 7.
Austria was leg 8.
Switzerland was leg 9.
In Austria, there may have been a food challenge on the famous Wiener Riesenrad (German for "Viennese giant wheel") Ferris wheel at the entrance of the Prater amusement park in Leopoldstadt, the 2nd district of Austria's capital Vienna.
There may have also been a task involving carrying "Freud's couch" to The University of Vienna.