A lot of debate has already taken place on its run and TT. So it's nothing to blame. ER is only not concerned abt it. Hota to 12323 mein lhb resource ko waste kiya jaaraha hai use 12273 ka hlhb rake dekar uska lhb rake use karta or 130 mps pe chalata jisse iski punctuality sudhar jati especially in dn.