There was a rajdhani special which use to depart at 7:45 pm from BCT. that timing should be suited for duronto by no doubt and also the timings share slot of TVC Rajdhani which is not daily. Ofcourse Duronto is faster in the timetable but reason is good rake condition of bct duronto i.e used just for twice a week and runs half of distance than tvc rajdhani, hence having more speed than rajdhani in same time slot. No matter if the cost of the train is increased by 50-100rs by this. But these timings will be far more favourable.