Could a treaty battlecarrier keep battleship guns?

Could a Washington Treaty battlecarrier mount battleship-calibre guns?

No. A treaty-compliant aircraft carrier could not carry guns larger than eight inches.

The Washington Treaty treated aircraft carriers as a defined category and limited their gun armament. A compliant carrier could not mount weapons larger than eight inches. A hybrid built around battleship-calibre guns therefore offered no carrier loophole under those rules. The fast-force alternative required separate battlecruiser and carrier hulls rather than combining both roles in one treaty carrier.