There is no DSP A or B Main inputs. There are only the H8000 MAIN inputs and outputs.
Besides that, Routing #12 sets DSP A > DSP B, the two machines are in series. Any change should be done at DSP input stage as everything will then proceed to DSP B.
You are using ANALOG outputs in your Routing…BUT you want to get audio out of the ADAT. How can ProTools possibly get the signal from ADAT if your output is analog?
At this point I suggest you specify what exactly you want to do, describing the signal sources and route you want to achieve and how you want the 2 DSPs being connected between them.
best
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