I think that's overthinking it.
First of all, he didn't say the executive "trusted them completely". Those are your words.
He said "The executive assumed that we were competent, and was saying "I already believe you. Now let's talk about what happens next".".
That can be true even if they don't trust them completely. Let's say he trusted them 80% and not 100%. Isn't that pretty much quite trusting anyway?
Besides, the executive can trust them even 100%, but still want them to give him the general picture. Among other things, it's his job to know and be able to report when asked.
The VP also needs to know if the fix will require some sort of resource reallocation, or if the timeline is long so they can deal with the other stakeholders, or whatever. These are all forward looking things that the details influence but the details aren't what matter.