I will give you a prime example:-
Nagarjuna Express used to run
but
SC extended JB from Tenali to SC ???
According...
more... to you Palnadu says only 11 hrs idle.
what about incoming somhadri goes as next day mrng 05:45 hrs.
Can you guarantee Golconda Express speed will not be upgraded in future after getting Lhb.
Palnadu SF Express will remain with same speed in future???
But Mark my words Palnadu will extend in future maybe Ratanchal also.