We experienced an unfortunate experience the place we had to depart the aircraft following boarding, Soon ahead of the scheduled takeoff time, and re-board. The main reason offered was that a passenger felt sick and needed to cancel their options and therefor their baggage had to be found and removed. https://www.scribd.com/document/811869309/Benefits-of-Booking-Business-Class-Flights-to-Bangkok-From-OTAs