Parallel processing not working in Process chains when we run from BPC Package

Hi Folks,

    We are on BPC NW10 SP8.As we can allow parallel processses in BI process chains,we have to run a process chain which have 2 parallel processes and we are calling that process chain through a BPC Package.The 2 processes run parallel when we run the process chain in BI but when you call from a BPC Package,one process starts only after the completion of the other.Could you please tell me whether it is not possible to allow parallel processing for a process chain when it is called from BPC as it works in BI.Please check this attachment for further details.

Thanks