I once had four HWSs at one time. Before that I had two 722s and two 722ks at the some time. Both setups had two DPP44 switches. Correction, only the four HWSs required the two DPP44 switches.I was thinking he was curious about limits regardless of the mix.
What we know is that some members here have 4 H3's, and I think the limit on Joeys is 6 on each Hopper.
Also, IIRC, Scott had 12 722k's on his account at one time when there were no extra fees with the America's Everything package.