Sure, and PR descriptions and comments are a way to do that (async).

But IME it helps to start with a good description of what the changes are rather than just having a pile of code changes dumped on you where you then have to reverse engineer the intent.

It seems draining to me to have to have to start from nothing and interrogate someone for every PR that comes in.

> You can also talk to people without scheduling a meeting

I didn't say anything about scheduling.