ABSOLUTELY WRONG...the PCV connection on the front of the carb (presently capped) should go to the PCV VALVE, presently shown on the driver's side valve cover. The BREATHER CONNECTION DEVICE, shown in your yellow line, is the air inlet from the air cleaner. YOU NEED TO GET A FACTORY SHOP MANUAL for your make, year and model of car....all the inquiries you have made are explained in great detail. BTW...you have an Edelbrock carb equivalent of a Carter carburetor, which WAS a.Carter AVS. The carb you show IS NOT an original but an aftermarket replacement. Someone along the line, removed the original carb and replaced it with the carb shown....it may work, but it is not what is original and will need to be researched as to the model needed and the correct installation connections......get yourself a factory service manual....
BOB RENTON