The Blink DC FC Stations do have two cords, but cannot charge two cars at once. Their electrical components and the electric utility connection is only good for 50 kW.
What it does buy you, though, is sequential charging. So while one car is charging, you can connect and configure your session, and then the Blink will charge your car when the first one is finished (assuming both sides are operational, which is not always the case)...
I hope that helps...