Share individual visuals - no option to Open in Powerpoint

[ChrisOnesBroken]

We have the option to use the PowerBI addin in Powerpoint enabled, and we have Powerpoint installed on the users machines, but there's no option to share visuals (from the [...] > Share menu) via Powerpoint - we get 'Chat in Teams' but there's no 'Open in Powerpoint like it shows in the February 2023 update here;

What's new in the Power BI add-in for PowerPoint - Power BI | Microsoft Learn

There only seems to be one requirement to turn it on;

By default, the Power BI service includes entry points that enable users to insert the add-in into new PowerPoint presentations directly from Power BI. Power BI admins can disable this functionality by turning off the Enable Power BI add-in for PowerPoint tenant setting. See Enable Power BI add-in for PowerPoint for detail.

...and its enabled.  

Is there anyother setting somewhere, or something in a M365 or Azure portal?