Currently playing as Venice and I decided to try the "Request Invasion" mechanic with the Pope on the HRE. So I got the request, but I had to wait a bit for the truce to expire. I believe I waited 2 years. Then, lo and behold, when the truce expires I discover I no longer have the invasion CB! The Kng hasn't died. All that Piety wasted AAARGH! Is the CB time-limited, and if so, how long is it?