New front wheel drive cars have the wheel bearings/hub sold as a unit, and are typically held into the knuckle by a few bolts.
The Toronado CV shaft passes through the knuckle. The hole that is passes through is the ID of the wheel bearing. Here is a picture of the back of a spare knuckle that I have. You can see the toothed part of the CV shaft passes all the way through the knuckle to the toothed inside hub.