Unless they lose all their wickets, Middlesex are going to have to declare at some point. They have to win to stay up. Their current lead of 159 isn't enough, with two sessions to play. Setting Notts 200 in 3 hours is sporting, but that's the sort of thing they will need to do.
Kent, on the other hand, are fine with both matches drawn. They are in Lancs' hands re a declaration, but if they were to take 5 quick wickets, ought to win. Certainly shouldn't lose.