How is that possible ?
1. 12649 reaches KCG at 8.20 and 12650 departs from KCG at 7.15.
2. Lets say it departs from YPR on 12649 slot it will have clash between BVO to KCG same TT
...
Even...
more... if its just gets departure slot of 12649 from YPR it will reach after 9.30am only (unless they make it sf and give same priority as ksk -which I doubt) but yes now there is scope to change TT of this train both ways by extending it till BIDR/VKB or something via LPI so that it doesnt have to wait at KCG whole day - that way it can depart after 10 pm from both sides YPR/KCG and even SCR wont have problem as it will be taken till VKB/BIDR and they dont have to think about parking the rake)