@HTML_Celeb, you can try cloning the animation groups, then only play the portion of the animation group that is relevant. This playground is a demo of blending multiple animations that were originally a single animation group in the imported glTF:
@HTML_Celeb, you can try cloning the animation groups, then only play the portion of the animation group that is relevant. This playground is a demo of blending multiple animations that were originally a single animation group in the imported glTF: