Veerji, I am not able to find any clarification from ICAI on this issue. So I think, there no question you can ask upon words of Sanjay sir. To substantiate it, you yourself are saying that RTP of old course has provided questions on these chapters.
I think, you have seen that mail of Parag sir & are thinking this because of that mail only. We must not forgot that experience of Sanjay sir is far more than any of us (including Parag Sir). Sorry, I am not saying anything against Parag Sir.
I don't think any of us can doubt about knowledge of Sanjay sir (unless you take a clarification on this issue from ICAI).
I have listened several negative feedbacks about Sanjay sir but will not believe them until I see a clarification from ICAI, which I think we will ever recieve.