That very much depends on what you mean by delegated. In any large company there is a balance of letting employees close to the work have the autonomy to make decisions in their jobs while having governance and guardrails in place.
My view is that during integration, decision rights should be structured to centralize what protects value, delegate what accelerates execution, and hybridize areas where both alignment and flexibility matter. This balance creates clarity, preserves the deal rationale, and enables the new organization to operate with both discipline and agility