It would have been a better train if it would have passed through grand chord line (Mughal Sarai - Gaya - Gomoh - Asansol) instead of going via Patna. This train often gets late after Mughal Sarai only. Till then it is more or less right time.
No train from Amritsar goes via Gaya - Gomoh to Howrah/Sealdah/Kolkata. The number of journey hrs also could come down with it being right if this would be done.