Catalytic Converter Simulation

Hi, I want to simuate the flow inside a catalytic converter in comsol.
The diffuser and the nozzle are to be run with a Turbulence model and the honeycomb requires a Darcy's law flow field.
How can I couple the solvers as the intersection of the parts is taken to be a Wall by default ??

I want the pressure computed by the Turbulence model to be used by the Darcy's Law solver.