Three hours from Lucknow to Allahabad? Sounds great. Because the current trains take too long [ and terminate at Prayagraj Sangam usually instead of main station]. Though it'll still not make it the fastest train b/w GKP and ALD/PRYJ. Ironically, the Bapudham Express is nearly an hour faster than the VB [ not surprising since that goes via the second shortest route unlike this loop based version].