In case of Rajdhani they are not bothered to check the correct ID and person. If thier chart is full thye will not come for whole night and sleep in 1st AC all together. When there is no one to board in between they just go and sleep. You may not agree but I travelled atleast 20 times and experienced such behavior atleast 12-13 times. TTEs just tick once and never visit the coach if all seats are full say Ahmedabad to NDLS all full.