Anyone know if the Di2 signals work with different groupsets? For example, if I were to get the 105 Di2 shifters, would I be able to use a GRX Di2 FD? I'm more excited that the 105 Di2 can run 11-36t native. For my gravel rig I was thinking 105 Di2 shifters + GRX Di2 FD + GRX crankset + 105 Di2 RD + 12 speed 11-36t cassette. Would something like that be possible?