Via SLN instead of PBH: Traction change get avoided (PBH-SLN) & via SLN dont keep train delayed but make BT at LKO/BSB!!
Via FD instead of PBH-SLN: Although time consuming, LP/ALP Schedule (PBH-SLN & SLN-LKO) would prohibit route commissioning via PBH-SLN. LP/ALP schedule and availability along with corridor clearance via SLN keep trains routed via FD!!