I mean the scene changes when it was getting to the good part, like when Inuarashi and Nekomamushi charged at Jack and the scene changed abruptly.
Ah, I got ya now. Oda's just setting up for a mini-climax for chapter 1000. He's using his climax build up techniques to make it more exciting. I'm going to be realistic that it is only the preliminary fights since we are not in act 4 yet. This doesn't diminish the excitement though, and I hope Inuarashi and Nekomamushi's unique size gives them a unique Suu Long.
Plus, almost everyone is overlooking Jack quivering in fear. He knows he is outclassed immediately upon their transformations, which means they get their revenge not only for their lost limbs, but for the people of their country, and the damage to the country/Zunisha too.