Nonsense, without even getting into a waitress picking and choosing on which individuals she will do her job well with, the busboys either clear tables or they don’t, and they do it when it is time to clear them, not before and not after, there is no variation in what they do, it is exactly the same every time.
And there goes the cordiality... Last time I will check your section for tables ready to clear...
You just can’t help keep from starting conflicts can you?