It should be very useful, at least for me, to have an activity that recaps main data from the different items of a multisport activity. So, after perform a multisport activity, it upload each part separately, but then GC creates a final one with the total time, and partial times and average pace, heart rate, etc...
This way you can have only one record for a triathlon, duathlon or other multisport disciplines.
Thank you
David