Maybe you haven't noticed, but this thread is about bleeding Servo assisted brake system. In particular the OP was having problems bleeding the Rear brake control circuit.
Now if you think that you will be able to bleed the control circuits from the calliper on these systems, then you clearly do not understand how the system works.
It is impossible these bikes have 4 completely separate systems. Front control, Front power. rear control and rear power. Each system has it's own fluid reservoir and bleed point.