@Badgerman Technically speaking, anything is possible!
Sorry though, I’m not very familiar with Sleep HRV. I assume you mean this: Sleep HRV – An app to record true (overnight rmssd) HRV from the Apple Watch - #86 by nich
It sounds similar in approach. If Afib mode is on you get more frequent measurements from an Apple Watch while sleeping and then can use the beat-to-beat measurements values to get rMSSD over time. My app will do all this and sync it to intervals as part of the daily metrics sync. Note that this and the Baevsky SI and readiness scores are “experimental”.
I’m sure what a total daily TSS view would look like. If you can give more info I can see if it fits in anywhere.
I’m focused on stabilizing and fixing bugs in the current TestFlight FIT → Apple Health and Apple Health → FIT Apple sync bugs, but haven’t planned out what could be coming next.