Yup GG have good slack if they allow then it may reach very early to UBL but controller have to check ahead route operations as HS need to handover to CR so already it was huge delayed so CR might be not allowing it after Pune so as per that No OT has provided and where as GG they allowed to run on its own as its terminating nearly at SUR and also it was on right time so controllers if get chance and cooperations from other zones controllers then they can allow delayed train to go ahead compared to regular on time train..