plumbing hand brake on a dragster

[FED 387]

so you cannot have 2 seperate systems AT ALL one for braking/stopping and one for staging???? I understand the reasoning for what HRA has ruled but are 2 completely seperate systems allowed one for braking by foot pedal and one for staging by hand ??? or anything more than ONE method (either hand or foot but not both) of applying brake pressure is not allowed