The Afronova Walk is an extension of the Crossover wherein the 4th arrow is the start of another crossover but still in 8th note as opposed to a 4th note. The most popular variant is the (assume this timing sequence, 4th, 8th, 4th, 8th, etc.) Left, Up, RIght, Left, Down, Right. Trying to do this sequence as a crossover would result in the player having to twist their body to the other direction to perform the second crossover, which may be difficult and tiring considering Afronova's BPM.