Connecting Input AUHAL to Output AUHAL for Real-Time Audio

I am currently working on a project that involves real-time audio processing in my iOS/macOS application. I have been exploring the Audio Unit Hosting API and specifically the AUHAL units for handling audio input and output.

My goal is to establish a direct connection between an input AUHAL unit and an output AUHAL unit to achieve seamless real-time audio processing. I've been researching and experimenting with the API, but I haven't been able to find a clear solution or documentation regarding this specific scenario.

Has anyone attempted such a configuration or encountered similar requirements? I would greatly appreciate any insights, suggestions, or pointers to relevant documentation that could help me achieve this direct connection between the input and output AUHAL units.

Thank you in advance for your time and assistance.

Best regards, Yosemite