I believe only discussions with relation to OEM work, no bespoke...

I believe only discussions with relation to OEM work, no bespoke build, only what has been developed for gen 4 single chip.

re: HP $3m, I thought that went into developing gen 2 or 3, but just never made it to the HP laptop bundling/ cross sell

Re: RT build it for free, by the sounds both companies are providing IP (build the chip/ build the buds), so pretty sure it’s a collaboration with RT don’t pay.
Having said that, RT has previously agreed to significantly partake in every CR, which allows the joint build to continue.