You said "My thought was I could put the HR strap on, have the Advanced turned off and get a more accurate HR reading with the strap." That would disable
all heart rate readings on the apple watch; built in HRM or bluetooth HRM. This is my point...
You're taking advice from someone who basically said in their first sentence they have no experience of using a bluetooth HRM with their apple watch and ignoring someone who
does know and... telling me the opposite of what i say is true... it's going to be hard to help you at this point but i'll break it down simply to how it works.
- Pair tickr with apple watch
- Any time the optical heart rate monitor is turned on, the apple watch will connect to the bluetooth HRM and then disable the optical heart rate monitor itself.
That's it. it will work in exactly the same way as the garmin. However, if you mess with settings to disable the heart rate monitor on the watch, it won't work. there'll be nothing to override with the bluetooth heart rate strap and it won't connect or take any readings.