Will be flying BOS-CPH in June with SAS and am EBG - I can see that SAS normally depart from Terminal C, while the LH Business Lounge is in Terminal E and the United Club in Terminal B. Any ideas as to what lounge one has access to in BOS, if any....? Is it possible to use in the LH Business Lounge in Terminal E? As far as I can read online, it looks like one might be able to walk airside between Terminal C and E, but it's not entirely clear.

Thanks in advance!