Develing examples to demonstrate Volume Lags and Point-to-Point dependencies I have realised that it also could be used to demonstrate indirect resource dependencies.
Reviewed scheduling fragment was with two activities and one dependency. It is easy to imagine real examples when activity A performs preparation for activity B and must be continuously ahead with defined Volume: 20m, 10m3, 10 items, etc.
Technologically, without considering resource requirements, this example looks SIMPLE.