Lola (Macarena Gómez) says she does not take the contraceptive pill because she is allergic, but in later chapters, believing that she and Javi (Antonio Pagudo) might be expecting, comments that sometimes she forgets to take it.
Menchu (Loles León) says in the 9.3 that she hates bald men, especially her husband. But when we meet her husband in the 9.16, he has hair.
In the 9.9, Recio's car is stolen by two prostitutes. However, in the 9.15 he has the same Mercedes car that he had before, with no mention of how he got it back.
In the last episode of the 4th season (4.11), Vicente says that he's going to live at Javi's house because he has eaten the last Goya's croquette and he feels lonely, but at the beginning of the 5th season, Vicente says that he doesn't want to eat Goya's last croquette, which he kept in the freezer until, in Chapter 9.2, Fermín thawed it, cooked it and ate it to make more croquettes for the Cushion Man with the same recipe and the same Flavor as those cooked by Gregoria when he was alive. In addition, Fermin says that it was "golden. At its perfect point", when supposedly the croquette should've been burned after Goya's accident.
Berta tells Antonio in episode 2.10 that she won't be able to have any more children because she has had her tubes tied as a gift for him. However, in 3.4 when the plot of the couple's search for a new child begins, they discover Berta's infertility due to a "killer mucus" in her uterus, completely forgetting that she had already had her tubes tied.