In all proceedings and after all parties of record have been given copies, the prepared testimony of a witness upon direct examination may be incorporated in the record as if read or received as an exhibit. The prepared testimony may be either in narrative or question and answer form. The witness must be sworn and must identify the testimony. The witness is subject to cross-examination, and the prepared testimony is subject to a motion to strike in whole or in part.
40 Tex. Admin. Code § 101.937