New Delhi, Nov. 14 -- Tata Trusts vice-chairmen Venu Srinivasan and Vijay Singh have defended the group's engagement with the Reserve Bank of India (RBI) over the proposed stock market listing of Tata Sons, saying that an adverse regulatory decision should not be viewed as a failure of advocacy.

In a joint letter responding to senior advocate Darius Khambata, the two said the engagement with the central bank had been a sustained process involving discussions and several steps taken by the company, reported Business Standard.

"The record does not support that description," the letter from Srinivasan and Singh to Tata Trusts said.

The response follows Khambata's recent criticism of the developments at Tata Sons' board meeting on Septembe...