Since we do not know the time sequence which may have been followed by an ... alleged ... abductor I have never gone into the timing of the witnesses per se.
Heriberto has studied these minutely and I bow to his superior knowledge as far as that is concerned.
It is generally recognised that an ... alleged ... abductor would have been capable of striking and being well on his/her way in a few minutes if not seconds ... and whichever timetable you use ... there were gaps which allowed for that. In my opinion.
In some scenarios an abduction took place that isn't planned in anyway but forced upon someone. It is for this reason I find it difficult to reply to your post as when I read it you make it sound as if someone was planning to abduct Madeleine and was choosing the right time to do this.
"Since we do not know the time sequence which may have been followed by an ... alleged ... abductor"
"It is generally recognised that an ... alleged ... abductor would have been capable of striking and being well on his/her way in a few minutes if not seconds ... and whichever timetable you use ... there were gaps which allowed for that."
I can't tell if you intentionally meant what I get from that, but it doesn't flow with the theory that John and some others advocate, that Madeleine woke and wandered, then got hurt.
No one planned to wake her.
No one planned the route she took
No one planned to knock her over.
So in our scenario we can't relate to a planned alleged abduction, as it feels more like a consequence of other random events.
Also what am I trying to time is not the abductor but more events that may have indicated when Madeleine could have woken or when she escaped or when she was knocked over.
Goncalo Amaral in one of his many theories proposed the accident happening inside of the apartment, I seem to recall something about Madeleine climbing up on the sofa and falling from there, that happening when Jez and Gerry were talking on the street below.
Who discovers her deceased in that theory I'm not too sure. But since it isn't in my theory and the timing seemed all wrong to me, I dismissed his theory.
It read as if Heriberto blames the alleged burglars for waking Madeleine and he proposed a specific time for that 21:51 or around there, but I can't recall why, or if he does attempt to explain why Madeleine woken by the burglars would exit the apartment via the front door, on the same side of the apartment as the burglars are operating from. I tend to think maybe Madeleine heard a noise but wasn't sure what woke her. But still why would she exit the front door when the patio door was left unlocked?