The £3.7bn marriage of Dixons and Carphone Warehouse will bulk the two businesses up, but the long-term rationale of the deal is vague. Lex's Alan Livsey and Oliver Ralph struggle to see the point of the deal.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
