I apologize in advance if someone has covered this thread, but I can’t seem to find one that satisfies me. Importing assets from blender, animations included, how would one animate two objects at the same time realistically. Keep in mind, in this scenario both objects are in separate FBX files. An example of what I mean is as follows: the player and a vehicle are interacting, the player has an animation which he moves his hand to open the door, and the door on the car which opens. Is there a trick to addressing this issue of synchronization? Thanks in advance. 
-sigmus
P.s. Sorry if it should have been placed under external tools 
Hi,
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make animation on multiple models (robot & gun) together
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Merge animation clips to make composite animations
Check this thread if you’re interested in more info.