We had an unlucky practical experience in which we had to depart the plane following boarding, shortly ahead of the scheduled takeoff time, and re-board. The reason presented was that a passenger felt sick and needed to terminate their ideas and therefor their luggage needed to be observed and eradicated. https://aucklandbusinessclassflights.blogspot.com/2025/02/why-should-you-choose-to-fly-first.html