I should know this, but I haven't flown out of A since CO closed the club there a decade or so ago.

I'm flying the new DCA-AUS SWA flight next week, it leaves out of A. I'd love to hang in the UA Club in B before the flight, as I doubt there's anything in A except hard chairs at the gates. Is it possible to get from B to A without having to go through security again at the A gates? No priority lines of any kind there, so I'm expecting it to be a zoo.