The abstract u mention seems way bck to CPR-BUI/MAU-ARJ-BSB been MG...also Poorva been mentioned as AC Express (1 isnt pre-fixed b4 train number)!!
Dunno wht u wanna highlight with such old discussion..still that Bridge is nowhere..N the discussion was more abt DOS-DLN-GCT-JNU-ALD/BSB connect to decongest Trunk route...Longer route, branch off frm Trunk & thn break thru Main line to get into branch line & thn merge to another trunk line....thats y it never gt feasible!!