@CPT_A there is a new topic with the question here and a reply with the current status: Which wahoo elemnt devices are systm "outdoor" compatible?
The original Bolt, the new Bolt, the original Roam, the new Roam, and the original Elemnt. All of the bike computers support it. Rival, the watch, does not.
There is also a manual Garmin integration: https://wahoox.forum.wahoofitness.com/t/outdoor-workouts-garmin-etc/19812
As posted earlier Wahoo wants to integrate into other devices in the future. But I haven’t found any further information.