I currently using Forerunner 955 Solar and HRM-Pro for training and racing.
In single sports such as running I could see running dynamics see below my activity:
https://connect.garmin.com/modern/activity/9329118122
However, in multisport such as triathlon or duathlon: no running dynamics could be capture:
https://connect.garmin.com/modern/activity/9352220599/7
Please help!
Note: this problem won't happen in my Forerunner 945.