I saved a copy of Allstate's Severance Summary Plan Description right around the time we were all funneled into 'signing' the arbitration agreement in late 2019. The plan description was last updated in January 2017.
Today I went and reviewed the same plan description found in AskHR, and noticed the plan has been recently updated as of July 2020. I'm still reading and reviewing the newly edited version and comparing it to the one from 2017, but I think this is one big reason why layoff/RIF notices were being delayed. They needed to rewrite some policies before they proceed with the hatchet.