Just a quick question, I think I know the answer but wanted to be sure.
The "act turn" Story Drivers only turn the Overall Story from one signpost to the next, right? So they don't directly affect the other throughlines' signposts (other than the rule of all signpost #1s have to occur before any #2s, #2s before any #3s, etc.)?
This means, for example, you could have MC Signpost #3 (or some part thereof) come before the story's Midpoint (aka Third Story Driver), right?
I'm asking because I think I see my MC Signpost #3 "The Past" clear as day (being forced to relive a traumatic past event), and it's what motivates the Action that is my Midpoint / Third Story Driver.
Note: I just found this thread where there seems to be some minor disagreement about Drivers being OS-only or not, but even @MWollaeger 's interpretation seems like it would still jive with my setup. So I think I'm okay...