It doesnot share rake with this train!
If it does, then even 12973/4 also share their rake altogether.
Rake 1: Fri Dept frpm JP (12974) - Sun dept from JP - Wed dept frpm JP as Special - Sat dept frpm JP as 12940.
Rake 2: Sat departure from JP (12940) - Tue Departure from JP - Friday Dept from JP (12974)