M365 Copilot for PowerPoint doesn't refer to entire contents of the reference Word file.

Hello,

Just sharing this in case someone else is wondering the same thing — the original question is still visible, but the account that posted it has been deleted. So I figured I’d share the answer here for future reference.

Can you use more than one Word file with Copilot in PowerPoint?
Currently, when you first start prompting Copilot in PowerPoint, you can only choose one Word document to base your presentation on. In the first screenshot, you can see it’s using Office Dog policy.docx(because who wouldn't love dogs? 🐶) as the source.

Copilot creates an outline based on that file. Notice the “+ Add new topic” button, that’s important for what comes next.

Also good to know: at the bottom, it shows how many slides it plans to generate and reminds you what is the maximum

Once the outline is generated, you can actually add more reference files. Just hit the “+” button between sections, describe the new topic, and upload another Word doc, like in this example with Different Dog Breeds.docx:

Copilot will then include content from both documents in the same presentation.

Recommendations I would suggest:
- Split the Word file into smaller documents and use them one at a time as reference material.
- Move the most important content to the beginning of the document.
- Give clearer prompts, e.g. "Create a presentation that covers all 10 sections of the reference document in one slide per section."
- Create multiple PowerPoint files, each focusing on a specific section, e.g. "Create a presentation about Section 1" in one file, "Create a presentation about Section 2" in another, and then combine them manually.