Its not possible for it to touch BNC from SBC as trains from SMET/YPR wud be placed on pf #8/9/10 , it can either connect MYS or YPR but not BNC.
I think it also has RSA with other passengers deprating from SBC/YPR . So I don't think its possible to even run via YPR/KJM which also includes time contraint (via YPR)