There are a million things that go on behind the scenes at a pitch session - that you have no idea are happening. You have no control over them and there's nothing you can do about it.
Case in point: Just before Christmas I made a broadcast deal for my incredibly amazing new show. Everything was in place. We were ready to go. The deal was a handshake deal with paper to follow. Slaps on the back! Hazzah's all around! And then what happened?
Haven't heard back from them. The director of programming isn't answering his phone or returning calls. Is my project dead? Is it alive? Did I do something wrong or is it a budget issue on their end? I dunno. They ain't saying.
So what's a boy to do? The only sensable thing, of course. You pick yourself up, dust yourself off and find another buyer for your show. The elements that made the show attractive to that broadcaster are still there for the next one.