Right now, only certain Wahoo devices that support ‘dual-band’ wireless protocols are subject to the Bluetooth prioritization. We made this decision because typically (by ‘typically’ I really mean ‘significantly’ - as far as the data show) Bluetooth is much more reliable when it comes to interference/dropouts.
That said, there are obviously cases where ANT+ may be more reliable (like the one described in the OP).
It’s got a little bit of weirdness as it is right now. If you pair via ANT+ then Bluetooth becomes available, a KICKR will swap to Bluetooth. It won’t swap back to ANT+ from Bluetooth, though. Right now this is “by design” because of some development roadblocks. Swapping device profiles isn’t as simple as it sounds, it seems.
This is going to go through some internal discussion. I can’t guarantee anything as of right now.
Note that dual-band is currently only on Mac and mobile apps. If you’re on Windows, the dual-band merging isn’t implemented. So you should still see both separate profiles with a Windows computer.