[Fedora-directory-users] can you use chaining to retrieve some attributes

forgive my ignorance of ldap; i'm just beginning. we want to set up a directory server which contains all the attributes except one. the other attribute we want to retrive from an ActiveDirectory Server. in other words, the client will issue a search query to the directory server and the directory server should return the combined list of attributes from this directory server and the AD server. can this be done with chaining? thanks bz