Does the manas participate in the transformation from the essential object to the object with a substratum?

Question: In the text, "the essential realm is altered from the very beginning of transmission, altered into the sense-object realm visible to the seventh consciousness, and when it enters the five sense faculties and the supreme faculties, it is altered once again" — the essential realm is altered into the sense-object realm visible to the seventh consciousness. Then: 1. At this point, the visible sense-object realm is an essence-bearing realm (it has not yet entered the supreme faculties). In this process of alteration, does the manas participate in the change? 2. Is the process as follows? The tathāgatagarbha takes in the particles of the essential realm into the manas, transforming them into an essence-bearing realm; at this point, the tathāgatagarbha also releases the seeds of the manas-consciousness into the essence-bearing realm; the three conjoin, producing the manas-consciousness, and the manas-consciousness contacts the essence-bearing realm and cognizes the sense-object realm. Is it like this? 

Answer: The manas is the second transformative consciousness (parināma), so the alteration of dharmas is certainly related to the manas; however, exactly how the manas participates in the alteration of dharmas cannot yet be observed. When the tathāgatagarbha takes in the particles on the essential realm, they become the essence-bearing realm; the manas, relying on the tathāgatagarbha, can then contact the essence-bearing realm. It is not that the tathāgatagarbha deliberately transmits the essence-bearing realm to the manas, nor is it that the tathāgatagarbha delivers the consciousness seeds of the manas to the essence-bearing realm so that the manas may contact the essence-bearing realm.