Oh yeah, to be clear I was just clarifying the structure. I don't consider American companies to be any more trustworthy than companies based elsewhere.

The US is far, far more of a threat than China even remotely is. That being said, I highly doubt the GOS devs would even consider any collaboration if a backdoor was ever a possibility.

Simple answer is yes.

However, Lenovo have full legal and financial control over Motorola. But because Motorola is a subsidiary, it's legally distinct from its parent company. And because it's incorporated in the USA it has to be compliant with US law. So, for example, Lenovo is not permitted to compel Motorola to violate US law.