Most boards can name their CEO successor. Far fewer can name the successor to their CFO, CISO, or CTO. That silence is not a talent problem. It is a governance architecture problem. In this episode of The Boardroom Daily Brief, Ash Wendt breaks down the C-Suite Domino Effect, the structural failure that occurs when boards build succession planning around one chair and delegate the rest. From CFO cascades and CISO liability exposure to AI architecture concentration risk, this episode explains why leadership instability now spreads horizontally across the executive team. If boards only plan for one seat, instability does not stay contained. It spreads.