A guy at my cricket club met Greg Chappell at a coaches conference in Adelaide and he asked him about his tenure as Indian coach. GC tried to adopt more of an Australian way of training in terms of a greater emphasis on physical fitness, fielding, running between the wickets, eating properly, etc, etc. This was met by a great deal of reluctance by the more established players in the team, principally Ganguly, Sehwag, Laxman, Tendulkar. I think the only one of the guns who did take note was Rahul Dravid. Being an outsider made it difficult for GC to try and implement his methods on a group who were happy to just rely on their natural talent and not work properly on their games to improve as a unit. One thing he said was that India were not a team, in fact just 11 individuals who cared more about themselves and their own averages, etc.
The problem with Greg Chappell was more of clash of ego.
Indian team has worked mainly with foreign coaches and i am sure all of them emphasized on physical fitness, fielding, running between the wickets, eating properly etc. Indian team had a superb run with Gary Kirtsen.
I think Greg Chappel was never a right fit for the team. Till day he keeps on making writing all these articles with negative comments about the team.
Greg chappel has to blame to some extent for indian team's debacle of 2007 world cup. It did work out as a blessing in disguise as there some major changes done in the team after that event.
A coach is also responsible to keep the team together as a group and Greg Chappel failed in that.