Start with the collective value, not the acquisition history
Acquired businesses can remain separate in buyers' minds when they communicate in siloes. The first task is to establish the value created by their relationship: what the combined business can do that an individual business, product or capability cannot explain alone. That requires prioritisation. Reduce the long list of business challenges, audience insights and product benefits until the central problem and the essential value are clear.
Teledyne Healthcare faced this issue when its healthcare businesses operated and communicated separately, leaving customers unaware of the breadth of Teledyne's capabilities. Its story brought the businesses together through the patient journey, while retaining room to explain different technologies and customer needs. A parent narrative should therefore make the connection intelligible, then give buyers clear routes to the specific expertise, product or proof they need.
Sources: Teledyne Healthcare: Storytelling for Life-Changing Brands, How to Be the Dumbest Person in the Room