Apple Watch 5 - Outdoor Cycle

Hello!

I have been using my Apple Watch to track outdoor cycling - however it is not carrying over to my exercise ring. I have read through the posts about heart rate being a factor but after looking at my last cycle workout avg. heart rate was 163BPM while the last 'outdoor walk' workout only came in at 129 BMP but the whole 30 mins was counted towards the ring.

Here are the screenshots. Am I missing something obvious?? (Also yes, I recently re calibrated recently but it's not helping with this cycle issue.).