Hi I have the same question.
If I am just hoping to use DaVinci for CC on my sequence. Think I will try this:
1) Apply the NeatVideo effect in PP
2) Export that timeline to something like an Apple ProRes
3) Bring that video file into DaVinci and just use Scene Detect
Might not be the fastest, but I think I will accomplish everything I am aiming for (NeatVideo with PP, Coloring through DaVinci). How does that sound?