How can I pull conversation topics into a data warehouse?

I have a connection set up between intercom and bigquery (using stitch), however I don't see data on conversation topics available. I have also looked into using fivetran instead of stitch, but don't see conversation topics available using that tool either. I am wondering if this is just a limitation of stitch and fivetran, or is it not yet possible to load conversation topics data into a data warehouse? Thank you!