Originally Posted by tarheelnj

The best "club to boarding" connection I've experienced isn't even at an airport. It's at Union Station in Washington in the Acela Lounge (which you can access with your PC membership card, even if not traveling business class). When you're ready to board your train, there's a back door which leads directly out to the trains, bypassing the boarding door where everyone's lined up. It would be like going into a PC then directly into the jetway for your flight.

That would be a very popular club if you could enter outside Security, but left through a dedicated Security line just for the club that let you out airside.