I agree with you, I'm not really super concerned about the different times.
What did concern me is Sergio's account of his night on the couch. The statement I read which was given to TPD is slightly different than his recount of events in a TV interview I saw. I have to go back and review both, but here is what I remember.
In the TV interview, he said he was on the couch and Isa walked by him. He asked her if she was hungry, she said "No Daddy" and was sleepy and went to bed.
In the statement to TPD, he says he went into her bedroom and tucked her in (or something like that). Then told the boys who were playing video games to keep the noise down.
The TV interview was an opportunity to relate the events of that night in a way that could make us understand that this was just a normal night. Then recount what a normal night in their home is. I had the same problem with Billie Dunn and her account of events before and after Hailey disappeared. I'm starting to feel that something is not right in the Celis home. I don't know what is being covered up, or exactly who is responsible and who knows or doesn't know.
Jerice Hunter stood up in front of hundreds of people, even marched to the AZ State Capitol shouting "Someone took my baby". She gave media interviews and said the same thing. No one took Jhessye from her home. After GPD came up empty handed and the investigation progressed, it became clear to them who was responsible for Jhessye's disappearance. Soon Jerice was ducking the media.
The cases are different, yet similar ...