I have those two identical armatures. I would like to copy a part of one's animation to the other. I came up with the idea of making an action strip and then I'll copy it. As shown in the pic, I need to copy a3 to the second object.
I used the method of CTRL+L > Animation Data. But copies everything and it affects a2. Affecting a2 means that in larger projects it'll affect all the strips which isn't a good idea.
I appreciate your ideas :)