I strongly believe that the Fenix6 series can support more than two CIQ datafields because the ancient 735XT allowed three and the Fenix6 has twice the cpu power.
So I am petitioning Garmin to allow us to test more and see how it works out.
This would be a nice way to finalize the Fenix6 series before they move onto the Fenix8+ and forget all about us, so at least we can use additional datafields to support missing or buggy functionality.
Here's beta ticket you can vote on if you agree?