Google Ads seems to be testing an expandable row in the channel performance report that shows you an overview of your feed-based vs asset-based metrics. You can click on a carrot icon to expand the row and expose the data summary.
Mike Ryan spotted this and posted about it on X - he wrote, "New! A expandable summary row has been added to Google’s (beta) Channel Performance report, which is very helpful for getting an overview of your feed-based vs asset-based metrics."
Here is his screenshot:
This does look pretty handy and a quick way to see this data.
Forum discussion at X.