How to make SceneView in TimelineView use Always on Display

I am rewriting my watch app in SwiftUI in order to make the app work with the always on display.

I have got it working well for text and images, which update even when the watch is lowered and the display is faded. However I also use a SceneView and this does not update whilst the watch is lowered.

Is it possible to update the SceneView when the watch is lowered? And if so then how would I do this? Is there somewhere I can access the date/time from within the SceneView, which may cause it to update?

Thanks.