As far as I can tell, https://arxiv.org/abs/2307.12008 https://arxiv.org/abs/2307.12008 is the paper by the original group and https://arxiv.org/abs/2307.12037

As far as I can tell, https://arxiv.org/abs/2307.12008 https://arxiv.org/abs/2307.12008 is the paper by the original group and https://arxiv.org/abs/2307.12037 https://arxiv.org/abs/2307.12037 is the paper they wrote with an outsider. Their chosen independent outsider is Hyun-Tak Kim.