You can't think about two natural language sentence at the same time.
It's possible to have a feeling at the same time though, or at least it seems like this.
So, is the feeling processed at the same time as thinking a natural language sentence or do these things happen in sequence and it only seems parallel?
Then it is also almost like a two-factor definition. Once it is defined through the symbol and twice through the easy, canonical easy language explanation. The easy language explanation must also be specced then.