I guess, the original poster only meant to say that instead of shatabdi, an overnight AC express would prove to be more popular and convenient. I would rather prefer to travel 8h 30 mins by a sleeper train than sitting. The timings of this train are also odd. Very early morning. Rather keep an AC express departing Pune/Hyd at 9:00pm and reaching the other end in the morning at 6:00 or 7:00 am if possible! They can reduce the speed to fit the timings thereby not interrupting other scheduled trains.