I think .9 is the end of "Act 1." Most stories have 3 Acts: Act 1, Act 2, Climax somewhere in the middle / towards the end of Act 3, which then turns into the conclusion of the story. So it doesn't surprise me that .9 seems to be this way.
It's just after the MC and Skylar talk about her two guitars. It's on the wall. So when you see the Les Paul and Strat, pay attention, it's a few frames away.