Grunger
I assume you mean the 11 from the 3 creatures and a 2 letter (not crooked so no line needed) interpretation of a useful activity in which an interpretation of one of the three is required.
I think that that is a bonus, a clever one, that the setter did not intend. Probably just a co-incidence but you could be right. It happened with the "If" one a few weeks ago. Brendan spotted the extra feature but apparently the setter did not intend it.