You can see in this pic in the neck cavity the gap between the tang and the cavity wall.
https://i.imgur.com/WJ7E8aR.jpg
And here it is checking neck alignment and scale length.
https://i.imgur.com/gVKU0pl.jpg
There was enough interference for this neck to sit in the body without clamping which was nice.
And here (on a different guitar) is an illustration of how the angled neck pocket works to give clearance for the bridge.
https://i.imgur.com/BZcdnua.jpg