I do not get you, Sir. You can very well do the entire MAS-NZM stretch by GR, The Mighty, or The Legend, or even the Raj/Duronto. Why you want to alight @ BPL? I can vouch for the above trains, you can enjoy the thrill of speed with these above trains themselves and will get a wholesome travel experience with long hauls. But if you really want to do the 12001, then as Optimus said you can book separate tickets.