When Anthropic on Tuesday launched a high-profile AI product for businesses that use Slack, some employees at Salesforce, which owns Slack, were confused.

In social media posts, Salesforce promoted Anthropic’s new product, Claude Tag, which works as a kind of AI teammate that lives inside group Slack chats. It sees and remembers everything that’s been discussed, flags unanswered threads, and handles coding, analytics, file search and other tasks. But Slack itself sells a similar AI product, Slackbot, which coincidentally is powered by Anthropic’s technology.

The new rival to Slackbot wasn’t the only cause for concern.