Can Target's machine-learning use Audiences created in the Target Audience Library?

Can Auto-Target and Auto Personalisation’s machine-learning use audiences created in the Target Audience Library directly?

The documentation (What Data is Collected to Build Machine-Learning Algorithms? | Adobe Target) specifically references audiences created in Experience Cloud (with examples of Adobe Analytics and Adobe Audience Manager), as well as audiences created in Platform CDP, but it is not clear whether audiences created in Target’s audience library are used by the machine-learning.

For context: We have a single mbox parameter which contains a comma delimited string of identifiers which relate to audiences defined in an external platform. We create audiences in the Target Audience Library to split out each separate audience and make it usable. The string itself will be relatively useless to the ML models. Ideally the audiences we already create in the Target UI will be available.

Thanks!