Two different processes. The catchcans catch the oil vapors/mist that are pulled out with the crankcase vapors. That varies but if it is very excessive then I would look to the valley baffel/orfice issue as the problem.
Oil entering the combustion chamber by being pulled past the poorley seated rings during the combustion stroke will be burned in the combustion process and further by the cats. This oil will never reach the catch can or PCV system.
So you will first need to determine which issue you have. For the PCV/baffel remove your throttle body and look into the intake manifold to see if it looks like the pictures.
The engine pics are just from some customer motors. We are engine builders with over 38 years building race & performance engines so we see every type of problem and result you can imagine. At present, there are 5 camaros in the shop, 3 corvettes, a 68 mustang, a maserati, a porsche, and a ford bronco.
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