That video on Brigade was interesting. Looks like they changed it to less of a path tracer and more of a combo path tracer rasterizer. It what has to be done when doing real time. They also had baked lighting in all the scenes. GI won’t be real time till Unreal 5 comes out.
Here is the scene. lacilaci86 is the one that directed me to it.
To get the hdris to match I had to change the rotation in Cycles to Z 270 degrees and make sure scale is 1,1,1 on x,y,z. I tried rotating the HDRI in Octane and it would only rotate in one axis and it was not the Z axis I needed.