Is it possible for multiple characters to aid another character by "pooling" the results of their task chains? An example I can imagine would be surgery, with multiple nurses and assistant surgeons providing help for a senior surgeon. The core book describes a scenario with a A -> B -> C chain, what I'd be interested is one with, e.g., A -> C, B -> C, D -> C. Maybe a system similar to MegaTraveller's Tactics pool could be adopted for this?