If your statement "couldn't have worse timing" is that USN strikes were to be coordinated (which I agree they were) but were not, I can think of a multitude of circumstances that could have made US "timing" worse, (i.e. early spotting by scouting IJN subs, or not having the Japanese plans for Midway in hand in time to ambush them).
I thought that we were discussing "given the general historical circumstances." Sure, the Japanese code might not have been cracked in which case there would have been no US carriers there at all. Or maybe a giant Typhoon would have sunk Kido Butai as they sortied for Midway.
The fact that uncoordinated attacks still achieved remarkable results seems to me to render the statement "the US could hardly have had worse timing" kind of irrelevant.
Not at all. Your claim was that the US had "lucky" or "otherwise good" timing. My observation was that despite BAD timing all around the US plan succeeded because it was a robust plan. There was no fortuitous timing in favor of the US at Midway. None whatsoever. Had the timing been modestly fortuitous, good, or "lucky" for the US, the Japanese would have suffered a substantially greater loss and achieved less. At a minimum no US ships sunk and perhaps the Japanese would have lost more CAs.
Your point that all 4 carriers would have been sunk at a stroke had the attacks been coordinated undermines the "worse timing " statement even more because the results are the same more or less 3 out of 4.
I observed that owing to BAD timing and BAD luck, the US strikes were weaker than they would otherwise have been. Nothing in the results historical or projected undermines my observation that the US timing was as unfortunate (for the US) as it could be under the circumstances.
Unless the loss of Yorktown due to Hiryu's momentary survival is your main point in stating "US timing couldn't have been worse".
That is definitely part of it. More to the point there was nothing about the engagement that can be described as "good timing" or "lucky timing" or "fortuitous timing" that substantially benefitted the US as you suggested. Were it not for the US' bad luck and bad timing at Midway, the US would have had no luck and no timing at all. In which case the Japanese would have suffered worse.