Case C-623/21: Order of the President of the Court of 29 October 2021 (request for a preliminary ruling from the Landgericht Stuttgart — Germany) — Société Air France SA v AQ and Others (Air transport — Compensation to air passengers in the event of cancellation or long delay of flights — Distinction between denied boarding, cancellation and long delay where there is a re-routing flight resulting in a delay shorter than the delay caused by taking the flight originally booked)