Note for future writers of such threads: SWM makes us think differently, in terms of tuners instead of boxes, so the first thing that you'll need to know is just what boxes you have, not how many boxes you have.
We figure out what you can do from knowing how many tuners each box has and adding them up.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw