I assume that the 2nd generation still has Conversation Boost:

https://www.macrumors.com/how-to/enable-conversation-boost-a...

Or are you referring to something different?

Looks great! Unfortunately I don't see the option anywhere in macOS with my AirPods Pro 2 connected. I guess it unfortunately can only be configured with an iPhone (and I don't have one).

Wow, lame. I'm even seeing in the docs that it requires a device with iOS or iPadOS. :-P Sorry for the wild goose chase.

Supposedly there will be just such a feature with a new version of the software (firmware?) that will be out "in the fall."