At one point I think Google had 4? chat apps. Hangouts, Voice(at one point merged with hangouts), Duo, and Meet. If you wanna count Google+ I think you could.
It is easy to confuse them all, considering those apps got renamed often. By my count, there were four different apps called Hangouts (!), some existing at the same time:
(1) The original Google Hangouts, which replaced Google Talk.
(2) Google+ Hangouts, which was video only. Google+ also had a text messaging app called Huddle.
(3) Google Hangouts Meet, a video chat aimed mostly at the workplace. By the time it was launched Google+ was dead and buried. The “hangouts” was later dropped, making it just “Google Meet”.
(4) Google Hangouts Chat, the equivalent text chat device. They also dropped the word “hangout” from the name, but it was launched as “Hangouts”.
https://developers.google.com/business-communications/busine...
I can't bring myself to care enough about whether whatever was in Docs is still going or not. We both know how it will eventually end up even if it is still going.