Same as us, I think...though they had become aware the board had been purchased.
It was clear from what I saw that Rob had planned a slow merge, and was doing prep work...then the hack happened, and bang!
A couple of days, I think. It happened that it took longer than that.
The dilemma is being mirrored right here.
I have seen numerous posts here explaining that the merge had to happen on an emergency basis because of a hack. It looks as though you have not seen those numerous posts.
It's just not in Rob's interests to do this stuff so suddenly. Look at the work that is going on trying to manage the results!
He's' made it as clear as is humanly possible that he hated having to do this suddenly.
Thing is, as I said, I think lots of warning and such would have made it easier for some, but I think no matter what was done, there would still have been a lot of Philosophy Forum folk who didn't see any announcements. It's just how humans are.
I don't want to seem defensive on his behalf, but I think it's a bit tough for him to be doing all this work to try to repair the damage from being forced into doing something the exact way he didn't want to do it because of an emergency, and also to have folk telling him he should do it the exact way he had planned to do it.