Yes. But it's not called transplanting. Short explanation of transplanting is taking a cutting of a plant and putting it in another spot. What you're thinking about is "grafting". I know I've read threads about grafting in here before. You won't get anywhere faster or anything better/different though by taking a lower node/branch and putting it higher on the same plant. Grafting takes a long time. Haven't deeply dived into reading about grafting, but there are benefits to grafting certain fruits/vegetables/plants.
So grafting a blueberry with something else won't get me a frankenberry? Lol. I honestly might try it out though. Like top two different plants and switch 1 cola on each
yeah, they won't share genetics by this approach. but you can achieve having multiple strains on one plant. would be alright if they have very similar flower times, but otherwise could lead to some trouble.