Fa_Q2 it is simple. Crooked Hillary got her ass handed to her by The Donald on every exchange. Crooked Hillary realized she had no chance if the issues were discussed. Therefore she and her Hollywood dream team had devised a series of "zingers," goofy one-liners from left field that were written out to function as "gothca's." The way these were used certainly seems to be after Crooked Hillary looks down at her pre-planned notes to review them and then wipe her face in that slow, obvious way to let Holt not to change the question. The final one with the fat, anal sex porn star involved in a variety of criminal activity was actually planned out for weeks.
The really easy way to disprove the hand signal issue is was there a time she did it in which Holt did not have her do a goofy, off topic one-liner.