The History Boys: Act Two, initial thoughts

Act Two: AKA the other half of the play.

• At the start of the play, in the first scene of the first act, Irwin is in a wheelchair. Act two also begins with Irwin in a wheelchair. Coincidence? I think not. The second act's initial wheelchair scene, however, is set in the nearer future where Irwin is a TV presenter on a history program and has a conversation with a future Posner who is a journalist and has a dictaphone as opposed to the government spin doctor Irwin in act one.
• From future Irwin's talk with future Posner, we learn that, despite his getting into Cambridge, Posner wasn't happy there and he becomes a journalist instead.
• Hector gets angry and sad after he is told to move forward his retirement and holds his head in his hands and shouts "SHUT UP" at the boys (strange, I wanted to do that all through act one). Apparently, Bennet, the playwright, witnissed something similar at his school when a French teacher asked why he was teaching at the god-forsaken school! Coooooool.
• Mrs Lintott, being the only female character in the play, has a comedic rant about how women follow men around with a "bucket" in history during the boys mock interviews. This is completely unconected to her otherwise minor role as someone for the other teachers to talk to and as such, is out of character and done only for comedy, which this last act is lacking in, what with it's angst ridden boys and the prospect of Hector's early retirement.
• On page 81, it is confirmed that both Irwin and Posner fancy Dakin. Don't know why, but does that seem likely to you? Really?
• On page 105, Hector is killed in a motorbike accident while wearing all safety gear including a helmet, full leathers, gloves and a scarf, but Irwin escapes with his life despite not wearing any of the above, save the helmet and sitting on the back and therefore in a less secure possition. Uh-huh. I hate to suggest it, but could this have happened because Bennet wanted to punnish the pedo. It seems a mighty strange way to end a comedy and dare I say it, a "downer ending", with the death of one central character and the crippling of another.