The adjudicative officer shall issue an initial decision on the application as promptly as possible after completion of proceedings on the application. The decision shall include written fundings and conclusions on the applicant's eligibility and status as a prevailing party, and an explanation of the reasons for any difference between the amount requested and the amount awarded. The decision shall also include, if at issue, findings on whether the Department of State position was substantially justified, whether the applicant unduly protracted the proceedings, or whether special circumstances make an award unjust. If the applicant has sought an award against the Department of State and another agency, the decision shall allocate responsibility for payment of any award made between the Department of State and the other agency, and shall explain the reasons for the allocation made.