HELP. trying to animate 2 armatures in 1 animation for unity

Hey there guys hope someone with more experience than me can figure this one out… I’m trying to put 2 armatures doing 2 separate animations at the same time in the same animation in unity. I animated them in blender but when I import them into unity they import as two separate animations. Is there ANY way i can have 2 animated armatures in the same animation? Its a human fighting a dragon, its purpose is for a VRChat emote so it has to be all self contained within 1 animation file. Thanks guys.

Did you attempt generic setup?
I believe legacy animation can do this but I dont use legacy so I cant say for sure it will work.