I have been to Zurich many times. Kaiseraugst is north and west of Zurich near Basel. If the article is wrong about something basic, what else is suspect? Nonetheless, it sets out an interesting scenario.
Thanks for posting these so often, SunkenCiv.
My pleasure. Even areas not under Roman rule had a lot of Roman visitors and even expatriates, here's a probably too-long list of topics related to Roman contact with India and China.