Diversion of any Raj via BSB not possible.
Ddu to BSB is too slow, it doesn't reduce time of travel. Although some express/SF can be diverted to reduce load of PRYJ-DDU line for ex poorva,Purushottam, Brahmaputra,Vikramshila. Only after Bsb to JHUSI turns to double line with at least 110 mps.