#15 2018 Elk Ch 6 "A New Hope"

How far had the bull walked through the shot? I was hugging the left boundary of the shooting window as it was, and as he walked further to the left getting a closer encounter with the cow he was checking, my arrow was already on it's way when his vitals disappeared behind the screen of chop stick pine bows. I was certain that my arrow had passed cleanly through the window, without trimming and possibly deflecting off any branches. But did it make it to it's moving target in time? Or was I in the disastrous predicament of a bad shot, outside the vital zone and too far back on the bulls broadside body?