Sharpening the attack on the Shapoorji Pallonji Group, a counsel representing Ratan Tata, chairman, Tata Trusts said at the hearing of the National Company Law Tribunal on Tuesday that a continuation of SP Group in Tata Group shareholding is unworkable. The SP Group cannot be on the boardroom of Tata Sons as the relationship between Tata Trusts – who control two-thirds in Tata Sons — and SP Group is “irretrievably broken and to a point, where they cannot co-exist”. The counsel, S N Mukherjee, argued that the presence of SP Group nominees in the board of Tata Sons will not