Too many cooks spoil the broth
Minimize the number of departments, groups and persons involved in a business process
Reijers, H., & Liman Mansar, S. (2005). Best practices in business process redesign: an overview and qualitative evaluation of successful redesign heuristics. Omega, 33(4)
Employing this approach should mitigate coordination issues. Time saved on coordination can be allocated to case processing. Decreasing department count could reduce shared responsibilities, akin to the split responsibilities approach. Yet, it might hinder expertise development (quality concern) and routine efficiency (cost concern).
Foundational free Patterns
If capacity is insufficient, consider increasing the available number of resources
Minimize numerical involvement
Too many cooks spoil the broth
Delegate and optimize your operations
Consider whether activities may be executed in parallel
Consider to deepen or broaden the skills of resources
Workload-based task assignment
Allocate tasks based on individuals' incomplete workload
Allocate task based on past feedback or quality metrics
Distribute tasks by interdepartmental interactions to enable or restrict involvement
Reduce the number of contacts with customers and third parties
If capacity is insufficient, consider increasing the available number of resources