Ross Brown had met with Chen Xiangbei. Although they weren't very familiar, the presence of Staler as a "bridge" made their relationship quite good.
As for Barrichello and Button, to Chen Xiangbei, they were more like senior "stars."
There's no need to say much about Barrichello; he assisted Schumacher, the King of Cars, to win five world championships, making him undoubtedly the strongest number two driver in history.
If you add Jenson Button's world championship, Barrichello's rating would rise another level.
However, to be fair, during his time with the Brown GP Team, Barrichello couldn't be considered a pure number two driver; he even enjoyed the treatment of being the team's number one driver during the early days with the Honda Team.
