Every project plan quietly assumes the relationship can carry weight: a resettlement, an expansion, a bad year, a mistake. Then it describes that relationship with words like "decent" and "improving", and never asks what it is rated to hold.
Treat it instead as what it is. Relational infrastructure bears load, and like any structure it has a capacity that can be exceeded. It decays, faster than concrete, because people rotate and memory fades and budgets get nibbled. And, this is the part that gives the discipline its name, it can be built. The capacity for agreement is buildable, surveyable, maintainable infrastructure.
Which turns the vague question into working ones. Who maintains this system, by name, with a budget? What is it rated to carry? When was it last inspected? A site that cannot answer those has an unmaintained asset holding up its production plan.