1) the end of 1993
2) the heat of the 1994 Benetton scandal
3) the end of 1995 after his poor Nurburgring/Pacific/Japanese races
4) during the 1996 season
I think from sources I have read that Hill and Williams were very unhappy long before Hill departed dating back to 1993 when Senna was there, then it took it's toll when Schumacher dominated.
According to Wikipedia's 1995 Japanese Grand Prix article (http://en.wikipedia....nese_Grand_Prix), it says, and I quote:
In the week leading up to the race, Hill was criticised by the British media after a poor performance in the Pacific Grand Prix; speculation was that he was to be dropped by Williams for the 1996 season, with either Heinz-Harald Frentzen or Gerhard Berger taking his place. Despite the rumours, Williams team boss Frank Williams gave Hill "an unequivocal vote of confidence" heading into the race.
That sounds like a deal with Frentzen was already done over a year before Frentzen took over. It sounds like in a way Hill was given an option "improve or leave". I vividly recall Murray Walker in his ITV commentary for 1997 Australian Grand Prix state that relationship was low between Hill and Williams and that the deal was done for him to leave long before the 1997 season.
I personally think he should of been treated better at Williams after the way they "dumped" him at the end of the 1996 season. He's not a world class driver, but to dump him on his ass down to Arrows was pure insult. Fact is, the car was bad, and was far worse than the superior Benetton, and Hill outqualified Coulthard on several occasions. Hill also pulled Williams back from the decks after a torrid start to the 1994.
What's your opinion on the Hill/Williams relationship in the mid-1990's?