Then he's going to be the absent (or worse, inconsistently-present) CTO, which is worse. If he's there then there's at least a chance of him and Linda working out clear roles and responsibilities. If he's totally absent then technical decisions are not going to get decided, which holds up engineering. If he's inconsistently absent then decisions may get decided when he's absent and then reversed when he shows up to the office, which makes it impossible to do any sort of long-term planning.