This says Implemented, and I know you can select either tasks or events across all activities, but to my knowledge, there’s not a way to sync to both.
What I was thinking was adding to the Activity Types Configuration page, and instead of just having a checkbox to sync to Salesforce, having the option to select syncing to task or event.
Our use case: We have some Timeline activity types that are SFDC events and some that are SFDC Tasks. So, ideally, we’d be able to mimic that classification with syncing.