If it is extended to VSKP its ok but without changing existing slot TT and route. Though there is demand from Tata only due to the fact that this duronto has non AC coach. I feel bbs rajdhani is under patronized because till date the train still not require 21 coach like other popular rajdhanis. Most probably bbs Raj have 15 coaches. So diversion of any Delhi bound train via TATA bksc cant make it nearer to optimally patronised. It can make sense if it is diverted via DHN. Its only possible via Adra-bje-pka. SER-ECR should think about it seriously.