https://www.devex.com/people/usa-fax-what-is-the-24-hour-rule-with-lufthansa-2443126https://www.devex.com/people/usa-fax-what-is-the-24-hour-rule-with-lufthansa-2443126https://www.devex.com/people/usa-fax-what-is-the-24-hour-rule-with-lufthansa-2443126https://www.devex.com/people/usa-fax-what-is-the-24-hour-rule-with-lufthansa-2443126https://www.devex.com/people/usa-fax-what-is-the-24-hour-rule-with-lufthansa-2443126