Tata Sons succession race narrows to Narendran, Agrawal; Chauhan emerges as dark horse

•Tata Sons narrows succession search to 3 candidates: T V Narendran, Saurabh Agrawal, and Ashish Chauhan.

•Narendran is the frontrunner among internal candidates, while Agrawal's experience in investment-banking and capital-allocation is also considered.

•Ashish Chauhan, a veteran of India's capital markets, emerges as a potential dark horse in the selection process.