Just found some more info regarding other brands and stacking two switches with one cable.  It sounds like it works fine just isn't recommended for redundancy reasons.   https://networkengineering.stackexchange.com/questions/62651/how-many-stack-cables-would-be-needed-if-we-want-to-stack-two-3850-switches   https://community.extremenetworks.com/extremeswitching-other-233226/how-many-stack-cables-for-two-switches-stack-6755077   https://community.cisco.com/t5/routing/number-of-stack-cables-for-two-3650/td-p/3179794   I'll probably end up using two cables to be on the safe side. ... View more