This is good intuition but generally people won't tell you whether they have a good or silly/self-serving reason in my experience, and you can only really get them to surface that by comparing it to the priority of other commitments and forcing them to depriotize something.
I think the ratings might be a bit borked. There's a dialogue path choice that results in the A+ where you end up asking directly whether the back-channel was worth another delay, and you. The VP says no. No junior gets interrupted.