the 53151 UP RHA LGL passenger's link follow this down 53180 LGL KOAA PASS. Next day It comes to Lalgola as the rake of 53179 up KOAA LGL PASS. and then returns to sealdah as 53176 down LGL SDAH PASS on the next day. the very next day it returns as 53171 up SDAH LGL pass. then it returns finally to RHA as 53154 down LGL RHA PASS. thus the rake followings take place. It happens regualarly