Redirect a parked page to another parked page?
The simple answer is yes, you can do this.
The next question should be then why not?
Forget if you get caught and booted. If you have poor performing domains, you want to know this up front to either optimize them or considering dropping the dead weight come renewal time.
If you have redirected them to another page, you have no way of gauging the traffic or the PPC of that domain.
Therefore, how are you going to know whether to keep or drop it?