They disconnected the wires and transported him back to the house. There was still a lot they could extract but experiments had proved anything more than 3 syncs was too dangerous. He wouldn’t remember any of this in the morning but then there were so many other things he wouldn’t remember.
His friends and family would blame age for the memory loss.
X2 sorted through the extraction, cross referencing it with their archives. There were only a few gaps left to fill in before the emigrants would have enough information to blend in with the current Earth inhabitants.