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
Establish a case-based mindset
Remove batch-processing and periodic activities from your business process
Form cross-department teams for end-to-end case handling.
Delegate and optimize your operations
Consider the division of a general activity into two or more alternative activities
Consider whether it is eco-friendly to let humans work over machines
Expertise-based task assignment
Match tasks to experts' specialized skills for efficiency
Reassign tasks along the organisational hierarchy
Performance-based task assignment
Allocate tasks based on past performance: execution time and success
Delegate tasks according to resource cost
Reduce the number of contacts with customers and third parties
If capacity is insufficient, consider increasing the available number of resources