For an obvious and physical example: when that one servant was SO badly beaten up in the 5th episode,it would kind of have made sense for him to sport SOME bruises in the following episode. But absolutely everything about the serious events was already forgotten. Of course, we were not told how much time had passed, but it did not seem to be THAT much.
Nevertheless, watching the last episode did make me want to see more of the lives of these people. It is a shame the series was axed. But at the same time I understand - Servants was well worth watching, but just a bit too mediocre to live.