970 with HRM-Run not showing Avg GC Time Balance (Left/Right balance)

I have an HRM-Run that has worked with my 735 and 945 without any issue.  Connected with my 970 and verified from Connectivity->Sensors & Accessories that it's connected at the start of a run.  (Shows heart symbol and HR-465213 ANT+)  If I take the 970 off my wrist, the HR stays populated and adjusts, so confirming the HRM is connected and working.  After the run, in the Android Connect app, it shows running dynamics, but is missing the "Avg GC Time Balance" that shows the left/right balance percentages.  I ran with the 945 + HRM-Run again to verify that the HRM still works and the L/R balance shows up in the Connect app.  The optical HR light on the 970 is still on during runs, do all the run dynamics the 970 does override the HRM-Run detail?