If A owns 80% of B and B owns 75% of C,A's ownership interest in B and C is characterised as direct.

Ownership Interest

The proportion of an entity owned by a particular investor, reflecting the extent of their legal claim on assets and earnings.

Characterised

Described in terms of distinctive qualities or features.

Direct

In financial and business contexts, this term refers to a method or approach that involves straight interaction without intermediary channels, often used in marketing to describe direct communication or sales to customers.