We are very excited to be on Singapore Air in First Class Suites, JFK to FRA. We have a 5 hour layover and a Lufthansa flight to Ediburgh. At this time, the only award seat we could get on the second flight is in Economy but hoping to be able to upgrade to Business closer to departure. Singapore, much to my surprise, has indicated that they have no contractual relationship with any lounge for us to use during our layover. When we fly BA in First and connect in Business, we still have access to the Concord room. Very surprised. Has anyone had any experience with this. Is there a proper party for me to beg to in order to gain access to a Lufthansa Business lounge? Appreciate any feedback. Thanks.