Message export through the unstable API: How to include Sender?

Hi.

I am using the unstable version of the API to export all messages sent in a given timeframe.

Reference: https://developers.intercom.com/intercom-api-reference/v0/reference/downloading-the-data

I wonder why Sender is not included in the exported data?

How to retrieve that information?

My best guess is that I have to use the ConversationID returned from the exported message data to retrieve information on the conversation as per:

https://developers.intercom.com/intercom-api-reference/v0/reference/conversation-model

and then use the author from the source object.

Is that correct?

Thanks in advance.