HERE IS THE EDITED DETAILS, CORRECTED BY ANOTHER RAILFAN ON YOUTUBE-
12338 Shantiniketan Bolpur- Howrah Jn. Express rushes past Gangpur behind 16481R Jamalpur shed WDM 3A. This train has an interesting rake sharing, which is as follows:
12342 Asansol Jn.- Howrah Jn. Agniveena Express arrives at Howrah at 08:45
Then the same rake is used by 12337/12338 Howrah Jn.- Shantiniketan Bolpur- Howrah Jn. Express,...
more... which departs from Howrah at 10:10, and after completing its round journey, finally arrives at Howrah at 15:40.
Again, it is used by 12341 Howrah Jn.- Dhanbad Jn. Coalfield Express, which departs from Howrah at 17:20.