Content should be derived from signals. Playbooks. Sales enablement. Brand. Etc.
We just had a conversation about cross-sell campaigns that relates to this. Our PMMs create these master docs with offshoot resources all about a product – how it fits into the stack, pains and differentiators, competitive positioning, etc. etc. Then we take that information and train agents on them. So idk if I'd agree that we derive playbooks from signals.
The "signal", which used to be just "targeting", is essentially the preconditions (which we learn from users and data) for, in the case of cross-sell, someone trying a new product. The content/enablement/etc is a superset, containing the key personas, account profiles, competitive positioning, etc.