Except they didn't interoperate, Duo didn't work on laptops, Meet had terrible sound quality unless you had a $1000+ laptop because it used software video decoding...
Having spent 5 mins debugging it... it looks like the audio and video buffers are occasionally not exactly the same lengths, and it causes a glitch in the audio whenever the audio buffer is slightly longer.
It doesn't seem to happen when not CPU capped though, which I haven't quite figured out...
Audio encoding is not of particularly high complexity. Even the highest complexity modes of the best codec right now (Opus) are like 60-100x real time on commodity hardware, and not too far off on phones.
>Meet had terrible sound quality unless you had a $1000+ laptop
Certainly not my experience. I use a few different video platforms including Meet and have never noticed material differences in sound quality. I mostly use an iMac but it's about a 5 year old system so it's hardly high-end by today's standards.