Import Cocoapod that indicates "use_frameworks"

Question

I have two Objective-C projects that are Cocoapods. We will call them A and B.

The podfile says "use_frameworks!" I can include frame header files from the containers that it pulls in and creates the project. A is also the pod itself (it has .podspec)

B podfile draws on stream A. B podfile also indicates "use_frameworks!" When I create B, none of the A files can find the imported header files.

I specify use_frameworks because I am pulling pods with Swift code.