^^^No ..Them both executing Jinton at the same time initially and someone then pulling it at a higher speed isn't automatically giving the other person the feat to do so. Doesn't make sense when Mu had chances to do so like against Naruto the but didn't..If he could so it faster like Onoki could, he'd have done it so no he doesn't get the speed prep.
Look at this
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. There are sphere-shaped holes in the rocks. Jinton can be created in cylinder, cone, or square forms, but not spheres. Only time a sphere is created is when
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. That means that when Muu and Onoki fought off panel, they matched each other's jintons, every single time.