Let's consider today's race between Poorva & Sealdah Duronto between MGS and Gaya. Poorva Left MGS @ 6.45 hrs, getting 15 min late only; whereas Duronto left MGS @7.00 hrs getting 2 hrs 10 min late. Poorva is given 75 kmph avg speed inbetween, whereas Duronto is given 95 kmph avg speed. Let's see, where the overtake happen.