@Edent I got this one right, but of course it's easy to be an "armchair warrior".

My thinking was that: sure, this might actually be a legit notification from the legit bank's legit app and legitimately about what it purports to be, but *how do I know it's about the call I AM ON?*

Nothing in the message ties the notification to the call *you're on*, so I can't be sure, so it's a reject.