Plz see the TT of this train (02925) between NDLS and ASR and compare it with that of 02715 NED-ASR Express.
Between NDLS and CDG, Sachkhand takes less time while between CDG and ASR, 02925 is faster..
Similarly, both trains arrive and depart from CDG at same time in same direction.
Between CDG and ASR, though 02925 has one more stop Jalandhar Cant, it...
more... takes less time.
Net Result: Sachkhand is intentionally slowed down between CDG and ASR to a great extent implying priority for Paschim.