Board Thread:Versus Debates/@comment-43403813-20190805194702/@comment-43403813-20190808230305

@AsianReaper Kaguya has access to these dimensions through her Rinne-sharingan, we don't know for sure whether her ability of interstellar travel is thanks to her Rinnegan powers, it could be due to one of her other ocular dojutsus or an inherent ability of her own.

This is why I think the Rinnegan must have boosted summoning abilities in general, as opposed to it specifically working in Kaguya's dimensions.