If a company has a classified security clearance (FCL), would that suffice in lieu of the DD2345?

A DD 2345, Militarily Critical Technical Data Agreement, is separate from a Facilities Clearance (FCL) and one will not suffice for the other. Both will be required to perform classified work on a classified project. Please note that not all work on a classified project is classified; therefore, all members of the project team may not be required to have an FCL.