Originally Posted by
ty97
I believe LH has this in BOS as well (someone can confirm).
AT ORD, DL has the ability to board to one or two of their gates from their lounge now that they have moved to T5 .
Confirmed for LH at Boston, but only to Gates E10 and E11. I’m not sure how often E11 is used, as it is often occupied by BA’s A380, so in practice lounge boarding seems to be mostly for Gate E10.
Gates E9 and E12 are also commonly used by Lufthansa - to which you’d have to walk.