I have a somewhat silly question, but I tried googling and I couldn't find it.

Last November, I was flying United from PVG to SFO. I'm United Gold so I tried to get access to the lounge. I somehow was sent to this area that was literally a balcony area above the terminals (like a food court atmosphere). I can't remember the name of the airline lounge, but I'm pretty sure it was some Star Alliance "lounge." I put lounge in quotes because it really was like a food court area with some couches.

Does anyone know what I'm talking about? It's been driving me crazy because since then I've been able to access the Air China lounge. I just don't know where I ended up that one time. Was I so out of it that I just walked into some random smaller airline lounge?