The goal is to use the Pixel as a computer with video output and power delivery to charge it.

I just tried out the Dell D6000 again. Display and audio work. Ethernet does not. From what i can tell, Google never added DisplayLink's Ethernet adapter to Android.

Would it be possible to plug the other cheap non-DP USB dock with RJ45 etc. into e.g. Dell D6000 to make the RJ45 work through the other hub?