CDC + Outbox pattern question

Hello,

I read so many articles about CDC + Outbox pattern and how data modified (save/update/delete) in the database and about the Outbox table where a stream process (Like Kafka) picks these events from the outbox table and send them to it is subscribers/listeners.

However, the only thing I couldn't find an answer to is the reading model. Where we read the data from? Is it a different database and if so do we implement it in this case using CQRS principle (If not, what other options)?

I would also appreciate if anyone can link or direct me to a blog/video that discuss the reading portion.

Thanks