418
Nothing Phone builds a blue bubble iMessage bridge while Google and Apple fight over RCS
(www.androidcentral.com)
This is a most excellent place for technology news and articles.
They did work collaboratively towards a standard. They just also in parallel worked on their own project, because they know standards can take an indefinite amount of time, so it could have been a decade to get USB C fleshed out, while they had already been working on Lightning in the background.