Yes, and it will work exactly the same as any other line-of-credit used for overdraft protection on a checking account.  Setup is the same; simply select the credit card loan as one of the accounts in the ODP configuration. When funds need to be pulled from the credit card, the system will first check to see if funds are available (will not take the account overline), then will apply the withdrawal to the Cash Advance (CA) charge type bucket currently in effect.