N1Grammar- studying differences between similar expressions

Quote:としたら (p. 362, since it's #2, already realized condition)

I disagree. I think it's "<My boss> said, 'Suppose you fail to secure even one order. If that happens, then you're not much of a salesman.'" - it's a completely hypothetical future with no indication that it's likely to happen, which makes it a very weird thing to bring up.