In my opinion, this is mismanagement. 40 Kms is too much. i.e. 20 minutes minimum. In that 20 minutes, all these looped trains could have reached next station. I once travelled in 9 hours late Ananya from SDAH to JP. At Firozabad, it was looped for 24 minutes around. I was wondering, in that tme, it could have easily reached TDL and anyhow it was supposed to take different route and platform. Unnecesary it stopped there for 30 minutes extra.