Earlier quoted context omitted.
The physical shape of Tesla/NACS is way better: it's more compact, and easier to plug in. The CCS connector OTOH is a lazy retrofit of a design-by-committee plug. The wire protocol of CCS is a bit overengineered, but it's a standard, and it's a sunk cost (all cars, including current Teslas, are already compatible with it). So physical NACS + CCS protocol seems like the best of both. It's also worth pointing out that…
Not all Tesla's can speak CCS. Older Teslas need a $400 retrofit to be able to use the Tesla CCS1 adapter. https://shop.tesla.com/en_ca/product/ccs-combo-1-adapter
Looks like the cutoff for this is vehicles before May 1, 2019.