Suburban tracks p thori na Superfast train Chalegi. Ddj-nh-rha line can’t be given 130kmph mps because of the high population density near the track section of Sealdah mainline. Even 110 would be too much because of so many LC gates. Furthermore how is bdc-kwae-az a better alternative? Hwh to Mldt via az is 332 and hwh to Mldt via hbc,rph is 331.