it was a neat reference that jojo part 1 op didn’t include jojo part 6 because in the ending of jojo part 6 Enric Pucci uses his new acquired stand (Made In Heaven reference to the album of the same name, which was the last album from Queen), because Made In Heaven has a consequence since if he use his accelerate time continuosly he would make a new universe which adds everyone from the original universe in the same place, but would kill everyone in a similar way he killed in the past (everyone would forget about the person that he killed) it was a neat reference because Enric Pucci makes a new universe where jojo part 7-8 takes part since the universe from jojo part 1-6 doesn’t exist anymore