Two streams can’t occupy the same channel. Together they would just make a bigger river. Yazoos are separate streams that use the landscape the larger stream created. They imitate on a smaller scale and rely on what the main river formed.
“No, I don’t want to hear it. Tell someone else if you look around to see that in your personal landscape you have modeled the flow of your life on someone else’s.”
Big rivers make the landscapes that yazoos cross.