I worked your image in my hack software, where I could specifically control each transform to the raw data - firstoff, your camera’s raw file exposed some bugs in my color filter array logic, so thanks for the opportunity to fix those.
Summarily, I’d speculate the differences you’re seeing are in the camera color primaries used by each software: RT, for your camera, appears to use the dcraw values (inspection of camconst.json), where LR probably has its own primaries in a DCP profile. There are also some tone differences, so whatever basecurve each is applying is having some differential effect.
I have to run to work (benefits of part-time employment yet to be realized… 
), but I’ll try to post an image or two later.