for Tesla Supercharger to CCS1 Adapter [Max 500A, 1000V] NACS to CCS Electric Vehicle Charging Adapter DC Fast Charging Fit for Rivian, Ford, GM, Volvo, Polestar EVs at Tesla Superchargers

The Tesla app didn't prevent me from starting the session -- it would go through the motions of starting the charging -- but would immediately stop charging saying an error has occurred. https://www.amazon.com/dp/B0DS2CKKFM is the NACS adapter. It was ~$50.