Well.....................
0:43 and 1:33? - your move.
Look at the video again. At 0:43 the "formation turn" is an illusion caused by the photo aircraft maneuvering, not the formation of A350s.
At 1:33 on my screen it was really hard to see what was going on. But from what little I could see, it was another case of the photo bird maneuvering rather than the formation.