Pcv inside Breather?

actually yes, IIRC the breather and PCV are supposed to be separated for proper engine "breathing", to that end I think you'll find that the breather goes on right (pass.side) VC and PCV goes on left (drivers side) VC and should connect to a front vac-port under the carburetor.

Correct, you can't push and pull out the same hole at the same time. Although it was rumored Louise Armstrong could. One side has to pull vacuum so the other can allow atmosphere.