Hi folks.
I know I've used iFrames to put ArcGIS Insights content into a Hub site before. But that was probably 10 months ago. Right now I'm struggling with it.
I create a workbook in Insights, and share it. I get the page with the various URLs. I've tried putting all of them into the Hub iFrame URL field.
I can load the Insights shared workbook directly in my browser from the URLs. So, the URL is good.
But when I put any of the URLs into a Hub iFrame, I get shown my organization's AGO home screen - both in the Hub editor and in view mode (that shows our logo, org name, and a map gallery with some of our public maps). It is what I *might* expect to see if I was not logged in... but I am. Even in the iFrame it shows the AGO header where it sees me logged in inside the iFrame. Here is a screen shot.

So - what am I missing here?
Thanks for any "insight"