Multiple NavigationData using NavMeshBoundsVolume

Not sure if this is the correct place, however,

I’ve got a large map I have placed two NavMeshBoundsVolumes in the level.
I created 2 supported agents.


And then assigned them to the level bounds

image

Now I would assume (maybe incorrectly) that I would get two NavigationData for each supported agent…
However, I only got one generated and it’s the second one on the array.

Why is this? Is the second one just overwriting the first because it’s using the same class?

Have I completely misunderstood what this is supposed to be doing?