> In an honest, well-functioning org, those are decisions made by completely different groups that do not (and should not) report to each other.

I don't agree at all. Different groups should be supporting each other and the overall bottom line instead of their parochial, narrow self-interests - the latter is a poorly functioning org.

If by group A delaying its $100M cost-cutting, group B can add $1B to the bottom line, it would be a corporate and group management failure for group A not to cooperate.