Just try it. I’ll honestly say that I haven’t seen forum posts about it, and I’m checking forums / AnswerHub daily, especially in Rendering, Content Creation, and Visualization / ArchViz. Look up Datasmith. There’s probably lots of posts about C4D models importing, but rarely have I seen Octane posts. If it’s primarily static / non-animated scenes, then do a deep reading of Lightmass (including GPU Lightmass) and lightmapping as it pertains to Unreal Engine.