https://community.renesas.com/general/f/general—forum/36399/l-a-usa-what-is-the-24-hour-rule-for-lufthansa

https://community.articulate.com/discussions/review-360/lh-what-is-the-24-hour-rule-for-lufthansa-24-7-customer-service-2552eeba-c91d-4bdb-ae31-f042ec447d2f