The board shall establish a discretionary parole date of not more than two years from the date of revocation if:
Subsequent discretionary hearings shall be held at intervals of not more than two years. The board is not required to see an inmate for a discretionary parole hearing at two-year intervals following a revocation if the inmate receives an additional felony sentence that carries an initial parole date longer than two years from the revocation.
SDCL 24-15A-29