Preventing app focus loss, Oculus Home from starting

When developing for Rift/Rift S, is there a way to always force application focus to the VR experience, and prevent Oculus Home from starting? 

I have come across a case when app focus gets lost while loading a level and the HMD is briefly taken off right before or during the loading screen. This is when using the Open Level blueprint node. The reason for why I don't wish to have Oculus Home to appear is that I would like to make an application to be used at a public event.

Currently using UE4.22 and OculusVR 1.32, with the Rift.