We have two Cisco 9300 and a 4 node standard VXRail cluster.  Our VXrail version is 4.7.520, we are in the process of setting it up and we do plan to upgrade to version 7.x  I want to know if it is possible to configure the two cisco top of rack switches in a Stack instead of two stand alone switches with a VSL connection.  None of the documentation references switch stacking.  

Any help or documentation is appreciated.

Thanks,

JJ