Not sure it works like that: https://pmc.ncbi.nlm.nih.gov/articles/PMC9122750/

Inequality declined temporarily during the recession, but reached new highs during the recovery.

2008 decreased inequality for a very short time, but inequality increased overall. The rich have the available assets to profit from instability and are able to ride out unemployment, for the poor a crash and losing their job can be existential.