Is there a reason that the Rivian wall charger seems harder than others to be rewired to be able to use as a NEMA plug. I had two NEMA plugs installed so that I would not be switching connectors between my Tesla and Rivian. I placed an order for a wall charger with my new truck in order to get extra mileage between my charging window of 9 pm to 7 am, since it charges slower than the Tesla. Everything I read says that the Wall Charger MUST be hardwired. How true is that or can I open it up and wire a male NEMA plug with the proper cable?