As some users have already noticed, alphaHRV now provides a readiness assessment during the activity. This is a result of the collaboration with AI Endurance and has been the reason for several updates (and some issues) during this summer.
You can find a detailed explanation on this new feature here → Real-time readiness with alphaHRV and AI Endurance | AI Endurance
Be sure you keep alphaHRV updated checking it periodically at Garmin Connect Mobile