(a) Duplication of some benefits prohibited. An individual who is receiving educational assistance under programs authorized by 38 U.S.C. Chapters 30, 31, 32, 34, 35 or 36 may not receive concurrently either educational assistance or subsistence allowance under the §§ 21.5700, 21.5800 and 21.5900 series of regulations for the same program of education, but may receive them sequentially.

(b) Debts may result from duplication. (1) If an individual receives benefits under 38 U.S.C. Chapters 30, 31, 32, 34, 35 or 36 for training, and he or she has previously received educational assistance or subsistence allowance (or both) under §§ 21.5700, 21.5800, 21.5900 series of regulations the amount of the benefits received under 38 U.S.C. Chapters 30, 31, 32, 34 or 35 shall not constitute a debt due the United States.

(2) If an individual receives benefits under 38 U.S.C. Chapter 34, and had signed an agreement with the Department of Defense to waive those benefits in return for receiving benefits under the educational assistance test program:

(i) Any benefits already paid under the educational assistance test program will constitute a debt due the United States, and

(ii) No further benefits under the educational assistance test program will be paid to the individual or to anyone to whom entitlement may be transferred.