Often people seem to disagree saying that NCR me bahut congestion hai. But look at the fact. Travelling 150km in 8 hours isn't normal. The average speed comes out to be approx 18kmph, a value that can be achieved with a bicycle! Right?
Moreover, NCR hasn't treated all trains likewise. Among BSB LTT, Mail, Mahanagari and PPTA SF some got delayed by 6 while some with 9 hours. Similarly, Tapti Ganga got delayed by 4 hours while GHY LTT seems not have been able to make up and continue to run with the same delay with which it arrived DDU.