I have a gravel bike with di2 dura ace and it’s fine for gravel around here. But I’m signed up for BWR in Asheville and I’m going to need something bigger than a 34x28. I was wondering if I can put a grx di2 rear derailleur on my setup and an 11-40 rear cassette and keep rolling. It looks like since they are both 11 speeds they should be compatible. Does anyone know?