Normally GG overtake happens somewhere between HRR-DVG and at the same time 2 crossings for 16536 with 16589, SBC-Gujarat trains. So daily 16536 is taking 1hr or more just for this HRR-DVG 13Kms . If at all this stretch doubling is completed, mostly in few months double line will open, then 16536 GG will be back to its best.