You need to use the Pixel Launcher, if you aren't already. It might also be restricted to English (United States) only as well.
If you're using gesture navigation, swipe up from the pill to about a quarter of the screen to pull up your recent apps list. If using 3-button navigation, press the square button. Then tap the Select button.
Overview selection is Pixel-exclusive and that is definitely OCR since it can detect text in images. It's not perfect however, and it doesn't seem to support non-Latin script.
The other way is to use an app like Copy [1] which analyzes app layouts.
https://learn.microsoft.com/en-us/windows/powertoys/text-ext...