Windows 11, when set up, tires to load everything including the "Widgets." The Widgets, however, are not a native Windows app - the Widgets interface is actually just a Microsoft Edge WebView2, which loads a page from Bing. And, as a web wrapper, it also loads in all of Bing's telemetry that would normally apply to Bing searches, specifically for that wrapper.
If you try using Wireshark with Windows Widgets disabled, you can expect very different results.
Edit: Also, for people who didn't get my point, if you open the "News and Weather" section of Windows 10, that means you will almost certainly see similar Wireshark output. Thus the methodology is actually pointless for telling us how much Windows 11 vs 10 natively track - the only difference this establishes is that Windows 11 tries to load Widgets on first boot when Windows 10 waits for first click.