There is a timeline error in this movie.

In the kitchen scene, when Frank's parents are arguing, the clock reads about 6:45 and then in the next shot, it is 6:15

Interesting. This is actually quite common in movies, but usually a director will avoid having clocks in any scene. The most common violation is that a clock will stay at exactly the same time, even if the scene transpires over several minutes. If a clock must be in the scene, they will usually turn it off.