This is just a real quick.
When selecting this option and plugging in a time, the feature does not actually start the network and hold kodi from starting. It actually stops the network from loading for the time selected.
This still can cause PVR errors. In this case when the network starts, it loads the PVR client and it fails, because the network has not established connection.
If the network were to start, and wait lets say 10 seconds (set by the feature), then the PVR Client would not fail because the network link would be up and established.