The Tata war came to a head last week, after directors voted to extend Chandrasekaran’s tenure and move toward a potential public listing, rebuffing Tata Trusts Chairman Noel Tata, who wants Tata Sons to remain private. Tata Trusts, which owns 66% of Tata Sons, called Chandrasekaran’s extension “illegal,” setting up a clash that could ultimately move to the courts.