For anyone following along, I heard back from our Databricks rep and the training team that this is, in fact, not possible today as Kaniz suggests. 

> When configuring your Delta Live Tables pipeline with UC, you are prompted to select a UC catalog and schema. All tables created in the DLT pipeline will be created under that UC catalog and schema - you cannot create tables outside of this catalog / schema within the same DLT pipeline.

They recommend creating a separate pipeline for each Unity schema you need to update, and that there may be a potential fix to this sometime in Q1 2024. In the meantime, I'll move forward the long way.