This doesn't make sense to me - it wasn't a secret that iran might do something in retaliation, and if i remember right, they gave advanced notice to iraq about their balistic missiles (which surely leaked to usa). I'm not sure what they would actually conceal by doing this.

Specific timing?

I'm not sure how - the misile strike happened before the passenger plane was shot down. You can't hide the timing after the event happened.

Yeah, but I assume if Iran suddenly closed their airspace, it would give Iraq/US forces a pretty big signal the attack is imminent.

The US could preemptively attack Iranian bases.

^^

This title is entirely nonsensical.

So Canada has a recording of a guy who was not responsible for the situation on the day the downing happened, making a "What if we had done X" speculation - in the form of a question.

The title of the post here is quite misleading.