Yes! You can connect your Notion account to Heartbeat by visiting this page: https://app.heartbeat.chat/cdcc/settings/integrations.

Then, when you create a doc in Heartbeat, you'll see the Notion logo:

Clicking on the logo will allow you to select a Notion page to sync. A new document will be created with all the content on the Notion page you chose. The doc will no longer be editable in Heartbeat, but any changes in Notion will be reflected in Heartbeat. There may be a sync delay of up to 5 min depending on Notion's current server load.