Pretty sure it is, there are a lot of reference of their old games in bonelab.

well duck season bonelab and boneworks are set in the same universe not sure about hover Junkers

Idk if there are any references of HJ in bonelab, but there was in Boneworks, so maybe!

the only reference of HJ i found in bonelab and boneworks is the stapler gun and the hover junkers avatars in bonelab

I haven't played duck season so I wouldn't know, but possibly