Okay… after a day of thinking about what CR wrote and after reading all of the comments, I can see where CR did answer the question, but they didn’t answer clearly, in my opinion.
The answer should have been, “Any oil that contains a very small or very large amount of synthetic oil can be called ‘Semi-Synthetic’ because there is no established standard.”
If CR had been more clear with their answer, I would not have been confused.
I feel better now… 