This is just me, but I have a feeling they didn't start working on this yesterday
None of us, have any idea what the tech crews and chip designers at all of these companies have been and are working on. Most of us, not in the know, didn't see Apple making and using there own chips especially in computers 5 years ago. It was rumored, but many on this site said no. I think Oppo and Samsung and maybe others have been working on there own chips. None of us know, but my take from most of life is, we don't know how ignorant we are.