Shell's purchase of smaller rival BG, the third largest oil and gas merger ever, was prompted by a phone call on a Sunday in the middle of March between Shell's ambitious and acquisitive CEO Ben ...

Shell's purchase of smaller rival BG, the third largest oil and gas merger ever, was prompted by a phone call on a Sunday in the middle of March between Shell's ambitious and acquisitive CEO Ben ...

Shell's purchase of smaller rival BG, the third largest oil and gas merger ever, was prompted by a phone call on a Sunday in the middle of March between Shell's ambitious and acquisitive CEO Ben ...

Shell's purchase of smaller rival BG, the third largest oil and gas merger ever, was prompted by a phone call on a Sunday in the middle of March between Shell's ambitious and acquisitive CEO Ben Van ...

Shell's purchase of smaller rival BG, the third largest oil and gas merger ever, was prompted by a phone call on a Sunday in the middle of March between Shell's ambitious and acquisitive CEO Ben Van ...

By Dmitry Zhdannikov and Karolin SchapsLONDON (Reuters) - Sometimes it takes little more than five people to put together a $70 billion oil mega-merger.