Multi-M-series sample clock sharing

[pgraebel]

Why is the following example for multi device sample clock sharing (picture) using a trigger block to sync starting of the slave? As with multifunction DAQ, the shared clock method seems to start all dependent slave devices automatically. In my example, only the master is triggered by an external flank and all slaves start in sync when the master starts. No need for a trigger VI for each slave like in the example. So is the trigger block redundant?

  <-- NI example "Synchronization of two M Series devices using sample clock"

I am using PXI, LabView RT and M-series devices.