Why does Rukia fall for so long when getting thrown by Yammy?
I timed it at 5:18-5:34ish for the animation of release to smoke cloud.

Anyways, the stretch of physics would be bad if he threw her underneath him, near his feet. But my eyes saw his arm stretched out away from his body after the toss in an attempt to basically spear-chuck her.

My speculation would be that they're relying on a set of three overlapping times: Ichigo's catchup (shortest span of observed time), Yammy's toss (short span of observed time), and Rukia's trajectory (longest span of observed time to get in frantic dialogue).

For anime fluff, this feels around average.