How Swiss friendships actually start

Swiss people take a long time to open the door. Once open, the door stays open for decades. That is the deal.

The fastest routes in: a Verein (club) around something you already do, a language course, a running or hiking group, or your Hauswart introducing you to the neighbour on your floor.

Small talk works better around a concrete activity than around a table. Suggest a walk, a lake swim, a bike ride, a market run.

Do not read early politeness as coldness. Swiss friendliness is quiet, dry, and often extremely loyal underneath.