Nandankanan, Odisha SK, Odisha Duronto and Anvt BBS SF suffer badly at the hands of NCR controllers due to poor controlling standards provided by them.
And Neelachal suffers badly due to CNB-LKO-PBH Nexus.
I have many personal experiences when I was detained for about 2-3 hours at a station in late night time , just to give pass to a rajdhani which was running nearly 50-60km away.