Audio problem: When the elf special forces are about to take off and the female elf does a somersault, the sound that is created when they touch their wrist console can be heard over the sounds of the jet pack take off sounds. No one is even touching their wrists during the scene. (01:19:27)
Audio problem: Outside the Miller's house the detective who was interrogating Scott is now shouting at the house with a bullhorn. When the detective lowers the bullhorn, his voice sounds like it is still being amplified.
Audio problem: When the cops stop the random Santa on the street thinking that he's Calvin, he says, "It's not even my suit! It's a rental!" But his lips are completely out of sync.
Answer: The elf on top probably ignored him as he was in no position to answer him. The elves seem to have a stratified society [i.e. some make toys, Judy provides food/beverage, some do security etc.] so it was most likely his job just to punch in the code so the sleigh would descend. With Bernard being the head elf, and probably the most knowledgeable on all things Santa related, he would be in the best position to talk to Scott and answer all of his questions.
Invader_Gir