Regarding the switches: They are the type of switch that requires a lifting action to change their position from ON to CUTOFF. The flight recorder provides the timing that it would take to perform the manual positioning of each switch. We obviously know that both engines were shut down. There isn’t a “glitch” situation in this case. The switch cannot be bumped or positioned by any means but through physical action.
So you think that the pilot switched both switches off in a period of one second. When it takes two fingers to pull out the lever and switch it down. Then move on to the next one. I might be barely possible, but not likely. And anyone who has any electronics repair experience knows how easily a glitch can occur for any number of reasons. There are intelligent questions to ask. And they are not being asked by most.
If the switches were turned off then would the pilot get a message about it on a digital screen? So what was the pilot responding to when he asked about the cutoff switches? Some pilots could answer that question. And Boeing certainly could. So why is it not being answered?
How about timing in the computer. If both switches went off at the exact same time then would they be reported as having gone off at the exact same time. Or would there be a one second delay in reporting both were off?
Intermittent harness connection, Computer hardware or software issue. It is a long list.
I also suspect that we are not getting a full accounting of the voice recorder. Would two pilots about to die not say anything at all in the final moments? Previous incidents suggest that they would.
A cold solder joint could have caused this among other things.
You have to stop looking at the movement of the switches as being the only explanation here.
If a light suddenly goes off in your home then is the only explanation that someone shut off the light switch? I think not. Not to mention intermittent problems cause by vibration and other issues.
Here a couple of videos from people who are at least thinking about it.
https://www.youtube.com/watch?v=WhCGWxb5zsE
https://www.youtube.com/watch?v=d4XY6qntTsc