https://www.bloomberg.com/news/articles/2021-09-14/klm-to-juggle-flight-crews-on-routes-won-t-mandate-vaccines?s=09

"Schedules will be adjusted to avoid sending those who aren’t vaccinated to destinations where they’ll fail to meet entry requirements, and managers won’t be told why workers are being kept off of certain flights."

Impressive. I should fly KLM more often.