Corrupted GLB?
Hkx files import properly with Blender. Hka files appears to be corrupted.
Version of hkx, hka files: 2014.1.0-r1
Video of the issue.
Video_3.zip (Had to put video in ZIP file because of some GitHub glitch with uploading videos directly)
I also tried specifying skeleton with "-s" parameter, still file appears corrupted.
The only problem I see here are animation bindings, they contain duplicate node indices.
For example binding for 2nd animation contains a lot of 1s pointing to node (BehaviorHack).
This triggers ANIMATION_DUPLICATE_TARGETS exception when importing GLTF.
It appears that Blender V5 no longer supports loading such files, since I used V4.4.0 and file loaded okay.