Originally Posted by
jetsfan92588
Put another way, if I'm on an email with a client and someone higher up than me, and the higher-up gives bad advice, I go talk to that higher-up (or in extreme circumstances/ with approval of that higher-up - their boss). In no circumstances would it be appropriate for me to email the client and tell them that what my higher-up said was wrong.
This is an excellent comparison, IMO.
If the FA disagreed that strongly, she could have easily caught up with the captain and quietly said "If you're deplaning because of the heat, it's actually starting to feel much cooler in the back" or whatever was on her mind.
If she's relaying something to a passenger, a simple, "I'm going to go check with the captain on that" would suffice. There's no need to announce to your customers that you're in complete disagreement and are about to attempt to reverse a decision. In fact, if the roles were reversed, I'd expect exactly the same of the captain, too - pull the FA aside, figure it out quietly, and don't announce to pax that you think your lead FA is wrong.