The 955 seems to be able to add only 2 connectiq datafields, however even this doesn't work when I select an ANT(+) field or anything remotely complex as one of the two...
For example adding one of the following:
ANT+ Heart Rate Monitor: https://apps.garmin.com/en-US/apps/7c83d402-4b68-4f0a-b167-7139788a19b3
Auxiliary Heart Rate v2: https://apps.garmin.com/en-US/apps/a461bc0d-828d-47c8-a4a5-8d014b5fedc9
Stryd Power zone: https://apps.garmin.com/en-US/apps/18fb2cf0-1a4b-430d-ad66-988c847421f4
Cause issues (on their own they work fine, but can't add any 2nd datafields afterwards). It almost always ends up in a crash (IQ! error). First adding a normal one (battery field) and then adding an ANT enabled/complex one also causes a crash.
Adding two simple ones seems to be ok.
Can anyone confirm?