When it comes to some of the finest skippers in world cricket, especially in Tests, Virat Kohli and Joe Root are two of the most prominent names that strike one's mind. The Indian has stepped down from the role following its recent defeat in South Africa. However, the Englishman is still holding on to it despite the embarrassing loss during the Ashes in Australia. Meanwhile, former Australian Ian Chappell has pointed out what separates the two.