Oops, Yes I meant DP34. I have a couple of them here no longer in use.The cheapest way is one DPP44 and one DPP33 on the DPP44's passthrough ports. 1st port on the DPP44 takes the power inserter, then the remaining three go to a duo node, and the 3 on the DPP33 go to the second duo node. Connect client ports together and voila. Everybody sees each other.
Do you mean a DP34? I have one of those, and it has passthrough ports going to my DPP33. I have no idea why they left off the passthrough ports on the DPP33.
Last time I priced them a DPP44 was nearly twice the price of a DPP33.
Just checked again at Dish Depot and the price for the DPP44 is just $10 more than the DPP33. It used to be a lot more. I paid 99 for mine some time back, now it is 59.