Azure Machine Learning - Managed Online Endpoints - Access private azure resources (legacy network isolation)

Question

Hi,

I have created an Azure Machine Learning workspace and need to use Legacy Network Isolation mode (utilizing our own VNET instead of a Managed VNET).

Everything works fine, except for Managed Online Endpoints. Part of the script requires access to other private resources behind the VNET, such as a data lake storage account or an API.

Is there a way to set up connectivity between Managed Online Endpoints and other resources?

Based on the documentation (https://learn.microsoft.com/en-us/azure/machine-learning/concept-secure-online-endpoint?view=azureml-api-2&tabs=cli#appendix), it appears that when using Legacy Network Isolation mode with Managed Online Endpoints, you can only access the workspace itself, the associated storage account, and the Azure Container Registry via automatically created Private Endpoints from the online endpoint deployment managed VNET to these three resources.

Is my assumption correct that it's not possible to access any other resources? If not, how can I achieve this?

Thank you for any help.