I've had a miserable love-hate relationship with Google Voice for years, what do you mean by "the latest iteration of Google Voice has chat?"
Announced in January 2017, the Android, iOS, and Web versions of Google Voice have a revamped UI and, apparently, text chat [1]; discussed on HN at [2].
[1] https://blog.google/products/google-voice/ringing-2017-updat... [2] https://news.ycombinator.com/item?id=13463940
The latest iteration of Google Voice has chat, for example, while SMS support inside the Hangouts Android App was removed on purpose and users told to use yet another app, first called Messenger, now called Messages.
All their communication products suffer from convergent evolution, yet remain in dizzyingly varying states of integration with each other.