Dynamic lead scoring linked to a time based deprecation

I was recently informed that we can achieve a dynamic lead scoring model through eloqua. What this means for our organisation is that a lead would show a certain amount of engagement, then a lead object is created in salesforce for our sales team to go after. Then the lead after not being able to be contacted would move to a "dead status" by our sales team. After this 'dead' assigment if the lead showed enough activity we could have eloqua change the status back to a "hot/new" status if the lead again showed enough interest. I was informed