I did a lot of research in the matter. I searched the National Archives (at Kew) from top to bottom, researched in the IWM audio library (a good account of Exeter`s CO there), readed various books and articles, and interviewed: a Lynx pilot who saw the events (part of his recollections already quoted in this thread), a radar operator in HMS Cardiff, an aircraft handler at HMS Invincible and the First Lt. of HMS Avenger. And really, I am just beginning!
Not unusual on you!!
Godspeed, my friend. See ya soon.
Christian