Sorry for being late to conversation in an earlier post, but yes I have the same questions.
Only other thing I may have mentioned in a possible at the bell or pre market buy order by deep pockets allowed to fill or as NN may have mentioned a matched order between "the boys".
I guess there's a multitude of "fringe theories" but makes one (at least me) tend to not have any confidence in the larger time frame charts.
You wrote:
"That paint didn't occur on some super size order either , so .... "
....which is interesting cause it may negate some of my own fringe theories.
I didn't research the "actual" trade and its time stamp and size. Sounds like you're on top of it.
Well, I have no further input or answers, these "magical" gap fills just irk me.