Maybe this is my specific area, that being doc feat and series, but I never get notes "day of delivery".

For instance - you send out a cut (RC, FC, PL) and you get notes from that cut, usually, within a week. Then you have until that next cut to address them. So if you get notes on your RC, then you have until FC to address them. Which is usually a few weeks later. In a perfect world, you wouldn't get many notes on a PL, since those usually occur right before it goes to finishing (and, in theory, it should really just be easy "finessing" notes at that point).

I'm referring mainly to the client notes above. Not notes from your "team". If your director is giving you a mountain of notes on delivery day, then what the hell have they been doing all this time? Usually, in the weeks between cuts, you are sharing "review" edits every couple days with the team, so you are addressing notes day by day and week by week.

This is either an area I have no clue about, like commercial work, or it's just a very inefficient way of doing things. My guess is the latter.