Edge 540 not capturing gearing data from SRAM Explr groupset

I have the Garmin Edge540 and the previous generation 12spd Sram red explr groupset. I followed Srams's guide the pair with the 540 https://www.sram.com/en/sram/road/campaigns/pairing-your-bike-computer-with-SRAM-etap-axs-components#garmin 

During the ride I can see my gear selection on the 540, however when I look at my data in Connect or Intervals.icu I can't see gear selection / duration anywhere. I don't think it's captured in the fit file either. Does anyone have a solution that allows me to see gear usage statistics, or is it not captured by the 540 at all?