Depends. What is "listening?" If it is merely keeping your mouth shut waiting for your turn to talk but not considering what the person is saying, then you remain closed minded, but more politely so. If you hear, ask an intelligent question or two, and **truly consider** the possibility you are hearing truth, then that sounds open minded.
There are 3 groups of people with some variations within them. There are knowers, there are believers, and there are disbelievers.
Believers and disbelievers are assessing evidence presented by some third party and calculating a position ... they should keep an open mind to facts and evidence both pro and con because new evidence can come along which changes the balance.
The knower is separate from that discussion. (1) There is nothing anyone has to offer that contradicts first hand experience. The person having the experience may have something happen that changes context, but that's an internal process you have no influence on. (2) To paraphrase, "that which has been seen cannot be unseen." Expecting your assessment of a situation to count as heavily, or more so, than someone else's first hand experience is both foolish and arrogant. That isn't how it works, never has, never will. Get used to it.
MIB