Your search is fine. Now do a reverse search -- KNW-IGP and BD-IGP. The lower range I mentioned will come into play. IGP may remain just for bankers, something like LNL. Yes, the single crew up to KNW/BD will begin in some trains while for others that don't halt there or are slow, it could be up to BSL. It has been a work in progress for years now, after Mumbai div. converted to AC traction. It is the lobbies/unions that are aggressively opposing it.