He got less than a season. There is no way you can use that to argue that he got loads more time.
To put it into context: When he was sacked, Chelsea were out of the title race and top 4. Verge of elimination from the CL and FA cup. Eliminated from the league cup. Any other manager would have been sacked by November in his position. AVB survived longer than most and would have been alright if he didn't alienate just about everyone. It's lazy to just say that 'Oh he only got one season, not enough time hur hur'