A common miscommunication in an R&D organization is asking another team to do a task, and getting the reply that they're willing to do the task if you provide headcount. You're not asking them to grow their team in perpetuity. You're asking them to reprioritize their existing work to accommodate one request.
(I know this isn't really a miscommunication. It's misaligned incentives leading to an exasperating kind of logrolling.)