The locations in both shoots are stunning.
The second test, with Macey, brings to mind the most famous scene in the classic John Boorman movie Excalibur,
which remains by far the finest adaptation of the King Arthur story.
The background to this scene is that after the dishonour of Guinevere and Lancelot is revealed, England has become a cursed, barren land, and King Arthur, like the land itself, is enduring a kind of living death.
But Sir Percival (or "Parsifal" in Wagner's eponymous opera) finds the Holy Grail. When King Arthur drinks from the Grail, his wound is healed and the land regenerates.
The stirring "Fortunata, Imperatrix Mundi" theme from Carl Orff's Carmina Burana
starts playing at 1:29 in the video. Then, just after 2:01, the blossoms start flowering again. The following scenes, with the Knights of Camelot riding through blowing flower petals, is breathtakingly beautiful, and the Macey test reminds me of that visual.
Actually, although this is a bit of a stretch, even the first test with Ava has a passing Arthurian association. The model emerging from the water in this manner recalls the Lady of the Lake, who offers Arthur the sword Excalibur.