Salesforce activity histories created by the video history integration are made without being related to other records. Therefore, you were required to manually set the records to the related items after the Salesforce activity history was created.

With this release, users using Google Calendar integration can now automatically relate the Salesforce activity history to the record set in Description of Google Calendar.

For more details, see Step 4 - b: Use calendar applications to set the "Related to" for the activity history.