1. MPs pass bill tomorrow they think will mean Boris Johnson has to ask for A50 extension by October 19.
2. Having secured that, they give him his election for October 14.
3. Parliament prorogued Monday next week. Late Monday BJ moves election date.
4. 19 October arrives. BJ does nothing.
5. MPs beyond incandescent but Parliament isn't sitting until the GE, now on the other side of Brexit Day
7. If we get to 31 October for *any* reason, we're out out. Game over.