Yay! I updated to Android 11 the other day and just thought to check if Google call screening works now and it does on my Pixel 3a!
Or it did the one time I tried it, lol.
IIRC, it would never work when the phone was connected to WiFi but would when connected to cell.
I checked and I had the WiFi indicator with the RW app (which is something that I’ve not been seeing much lately, the phone calls were weirdly mostly not using WiFi, but that’s a different story).
I’ll play with it some more and I’d be curious if other people can validate this.