Originally Posted by vinnyc

Hello Docbert and fellow FT-ers -

I came across this interesting reply, and wanted to have some feedback about Docbert's assertion above: has it been tested? I am looking at the official Star Alliance lounges policy, and only found that access to *A for UA Club and AC MLL paid memberships only apply when the flight is operated by a *A carrier. Therefore, I was wondering if this is an unofficial benefit.

I will have a return trip LGA-YUL operated by DL (for work, couldn't choose), and since the MLL is the only lounge available in the U.S.-bound flight terminal, I would be really happy to be able to enjoy some comfort, despite flying on a DL-marketed/DL-metal flight.

Thanks for your feedback!
-vinnyc