@taichokage: I wish they were like Shima-san. He tells us EXACTLY how long it takes for someone like Bambina to whoop someones ass XD
@joseph619: The notes in describing a ri. well it also doesn't look like he flew that fast in a second. He was able to say several grunts of pain before Ichibei caught up, which would slow it down considerably. So, while incredibly fast grant you, it's not mach 1000. That puts him in the 400-500 mach range. Every second counts for movements at such speed. Sure, he caught up, but he basically just appeared after Yhwach stopped. And even in doing this, there is no set time period. So for all I know, it could have taken Yhwach five seconds to fly, maybe even ten. So that also holds the problem with quantifying Bleach. They use the flash step far too often. So until the anime comes out (since I have no earthly idea how much time passed) I'm highly doubting that he is anywhere NEAR Mach 1000. Sorry.