are the bunny ears actually redundant | Super 8 Knot

Opis:
Is the super 8 or double figure of 8 redundant if one eye fails? ABOK 1085 names it Double Figure of 8. We show how to tie the bunny ears then pull it to 4kn and 9kn to see if we can untie it. Some knots are impossible to untie, and some are very easy to untie after being pulled. This was pretty much in the middle.