  The Computable Cross Norm (CCNR) was recently discussed in
Ref.~\cite{Yin:2022toc} as a measure of multipartite entanglement in a
condensed matter context. In this short note, we point out that it is closely
related to the $(2,n)$-R\'enyi reflected entropy, which has been studied in the
context of AdS/CFT. We discuss the calculation of the CCNR in random tensor
networks as well as holographic CFTs. The holographic dual involves a
backreacted entanglement wedge cross section in a geometry sourced by R\'enyi-2
cosmic branes. We perform explicit calculations for two intervals in a
hyperbolic random tensor network as well the vacuum state of a 2D holographic
CFT, and analyze the occurence of a connected-to-disconnected phase transition.
The example illustrates the validity of the proposal for analytic continuation
in holography for arbitrary values of R\'enyi parameter $n$. We comment on a
symmetry-resolved generalization of this quantity.
