How can I make the chat boxes disappear and disable the friend list on Google+ but not on Gmail?
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions on applications or application features that are no longer available are off-topic for Web Applications as no one will ever be able to make use of the answers again." – ale, jonsca
On pervious versions of Google+, you could click on the arrow icon next to your name at the top of the chat list and select Sign out of chat. There appears to be no way to do this on the more recent versions. (Although, the users that did not yet activate the new Hangouts feature for Gmail, they still can. But it seems likely that Google will roll out Hangouts to all Gmail accounts as the only option. When that happens, it's indeed no longer possible.