The Connections plugin for Notes misses in the Activities integration a critical feature. It's not "Community aware".
Create a new activity in the context of a community
Tasks created in a community activitiy (that is available when created from web) cannot be assigned to community members (only the everyone assignee is available)
On order to make the plugin usable the plugin needs to understand and support the Community service when creating activities and when managing activities that are assigned to a community.