Nathan Mogk (2025) has attempted to solve the Australian marsupial problem for Upper Cenozoic Flood Boundary models with a naturalistic framework. In commenting on the high improbability that so many marsupials would end up in the same remote location on the fossil bones of their direct ancestors, Mogk asserts that there are biogeographic parameters that would render Ark marsupials interdependent as they migrated into the post-Flood world. This, he believes, would greatly increase the probability that they would end up together in the same region. This reply considers Mogk's claims and how well they fit with what is known regarding ecological relationships and the geographic pathways necessary for a mass migration of marsupials. Mogk's assumption of interdependency is rejected, as it is biologically inadequate. Unless a better argument emerges, Upper Cenozoic Flood Boundary proponents must continue to argue for biblically unrecorded divine intervention to explain the Australian marsupial problem. Lower Cenozoic Flood Boundary proponents may continue to investigate that issue through natural post-Flood dispersal and diversification mechanisms.