(a) Upon review of any initial decision, the Commission may, in its discretion, limit the issues to be reviewed to those findings and conclusions to which exceptions have been filed, or to those findings and conclusions specified in the Commission's order of review issued pursuant to § 1.276(b).

(b) No party may file an exception to the presiding officer's ruling that all or part of the hearing be conducted and resolved on a written record, unless that party previously filed an interlocutory motion to request an oral hearing in accordance with § 1.376.