That depends on the reference point. From the human PoV We notice chimps ape us. If Chimps were to study humans, they may also notice humans ape them and come

That depends on the reference point. From the human PoV We notice chimps ape us. If Chimps were to study humans, they may also notice humans ape them and come to the conclusion that humans synchronize steps like chimpanzees do. Us being human, then we notice they synchronize like we do.