Yes, and in fact ANT Private (proprietary protocol) has been reverse engineered before. But this is kind of new territory for these manufacturers, and Shimano t

Yes, and in fact ANT Private (proprietary protocol) has been reverse engineered before. But this is kind of new territory for these manufacturers, and Shimano tends to be quite litigious. In fact the reverse engineering attempt I remember has all but been scraped from the internet: https://hackaday.com/2019/03/26/reverse-engineering-shimano-bike-electronics/ https://hackaday.com/2019/03/26/reverse-engineering-shimano-....