If he does, he probably does not anymore.

I think it's a misunderstanding. I found a couple of articles mentioning both Nokia and NSA, but here NSA stands for "Non-Standalone 5G network".

Here's a press release, for example: Nokia selected by Dedicado for 5G NSA network in Uruguay (https://www.nokia.com/about-us/news/releases/2022/12/08/noki...)

And a Linkedin profile (he must have a room in the office): Yuriy Pavlov - NSA Infrastructure Information Systems Manager. Nokia. (https://www.linkedin.com/in/yuriy-pavlov-1969904)

Microsoft?

ahh, the golden days when the smartphones that mattered ran Symbian and we thought Elop was going to be our Elon.

Microsoft purchased Nokia's Devices & Services division, and rebranded it as Microsoft Mobile. Nokia then pivoted to telecommunications infrastructure and IoT. So there's no longer a relationship between the two companies.