Board Thread:Support Requests - Community Management/@comment-46609067-20201022135438/@comment-44807868-20201022141555

If your wiki is on UCP (a wiki that's either created after March 11th or been migrated), then no, it isn't possible. All wikis will be eventually migrated to UCP as well.

A good alternative to the chat feature is creating a Discord server for the wiki. See this for more information. :)