You are correct that both the Curt Trailer Hitch Receiver # C13294 and # C13411 are confirmed to fit your 2017 Mercedes-Benz GLE43 AMG.
Both hitches have a hidden crosstube meaning that only the receiver itself will be visible once installed.
I do however recommend the # C13294 as it has a slightly higher tongue weight rating at 750lbs, and a slightly higher trailer weight rating at 7500lbs.
For wiring you will first need to install a 4-way connector using # 119250KIT.
With a 4-way... view full answer...