Hello,
short answer: No.
The Alfresco Portlets for Liferay are technically just Share components/pages within a thin portlet wrapper. They are aware that they are running within a portal, but have no access to any API of the portal. They are thus unable to contribute content/activity entries to Liferay portlets. You would have to adapt the Liferay portlets to retrieve and aggregate activities from Alfresco.
Regards