I have also experienced the confusion over R.A.C. ticket. In October 2015 while travelling in CPA-GKP Chauri Chaura Express, a passenger began to argue with me as he had to share his seat with me but very calmly I called the T.T.E. and he solved the matter. After knowing the R.A.C. rules my fellow passenger not only said a sorry to me but also praised my patience and calm behaviour.