Why does Bernard ask what happened after the game at Ebbet's Field in Death of a Salesman?

Act II
of  is quite revealing in many ways. The setting is the reception room in
Charley's office, where his son, Bernard, is sitting, whistling to himself, as he waits for his
dad whom he has come to visit. 

Meanwhile, Willy is having a major flashback
in the elevator going back to the day of Biff's huge high school game at Ebbet's Field. This
game is the turning point in Biff's and Willy's lives: the moment where Biff could have made it
big in life. According to Willy, this was certainly going to happen. However, here he is, almost
twenty years later, going to Charley's office to borrow money. During this particular flashback,
a much younger Charley downplays Wlly's extreme excitement about the game. This is why, as Willy
comes out of the elevator, Willy is actively re-living his argument with Charley that night.
Could it be that Willy's inner-embarrassment is flaring up when he realizes where he stands in
life at 63 years old?

To rub salt on the wound, Charley's...