Just because a certain group does things that other groups do doesn't mean that that is what the group stands for and same goes for narcissism.Conversational Narcissism is by definition making a conversation COMPLETELY about you! Someone mentioning something about their experiences and you stating similar experiences is called relating to them and an actual conversation by definition is exchanging relatable common ideas you have between each other. Another thing that is not conversational narcissism is expressing an opinion you have(judging something or someone based on what you think) that doesn't get in the way with others autonomy without genuinely bullying or abusing them and the other person being an asshole says I didn't ask for your opinion should be put in their place. You don't truly want an opinionated conversation based on others freedom speech(that is not actually purely constitutional because if it was it wouldn't apply to anyone but the government it's there for a reason and the reason is is that you do not need someone elses permission to express your opinions because that is censoring others which is not acceptable). If you don't want to hear about that opinion because you don't like it simply state as a grown adult willing to confront issues to be assertive in the relationship and to maintain it that you don't care to hear it and why you actually don't want to hear it. Another thing that is considered conversational narcissism which is not is when someone may or may not be directly listening to what you are saying to others and that person includes themselves in that conversation without being asked is unacceptable because it's interrupting not conversational narcissism. Another thing that is not conversational narcissism is repeating the same topic to the other person that they may or may not be sick of or are not interested in. This is simply hyperfixating on something you or that person are interested in.If you don't want that then be assertive and say I'm tired of hearing that or I find that to be a boring subject and if they fail to listen because they are either are little autistic like me  when it comes to reading and remember social cues or other reasons.Tell them that the topic needs to be changed and then change the topic in that moment but if they hijack/shift the conversation back to the topic you told them not to mention in that moment then that is minor conversational narcissisism and should not be tolerated. Any issues that genuinely bother you in a relationship need to be mentioned before the relationship ends or else you tolerated behavior that you saw as bad and failed to be assertive about it which is completely your fault because the other person has no control over that. Also snitching on another person to their face or others when they do something that you perceive as bad and fail repeatedly to change it is not monopolizing conversations either but giving constructive criticism as a helper and not being an enabler. You giving advice to the other person who is feeling depressed/suicidal and them not following through with it should NEVER be considered conversational narcissisism because that is incredibly unjustifiably invalidating to the other person's feelings and not developing a full understanding of their depressed feelings regardless of your experiences with depression because they are clearly not the same or else you would actually understand. Not asking enough questions about others whether they are actually interested in that or not and go on soliloquies because you refuse to actually engage and fill up the awkward silence is not conversational narcissisism either because if you are genuinely upset about them not asking you enough questions be assertive and tell them what exactly you want them to ask about you but if you don't actually have anything you want to say then there is absolutely NO justifiable valid reason for being upset about that. There was no conversation to begin with  to monopolize a conversation so it's not narcissisism. Accusations/Assumptions about another person is not conversational narcissisism but can be considered bullying if it hurts the other person not just annoying them however this is a sign of miscommunication and needs to be addressed before it escalates and causes several issues within the relationship. Random messages at random times is just a quirk by the way not narcissisism.Also the other person not listening to your feelings when you were downright unassertive about it is your fault and has nothing to do with narcissisism.People were not made to read your mind to realize things and unhealthy relationship patterns happen for various reasons and not just narcissisism.Blameshifting by not taking account for your part in the relationship also has nothing to with narcissisism is unaccountabilty and not narcissisism.To sum it up the only accurate definition and example of conversational narcissisism is if you mentioned that you don't enjoy dirty kitchens and I say I think rainbows are pretty. Unsolicited advice due to you poorly listening also has nothing to do with it.But the Kitchens/Rainbow thing is an actual example of genuine major conversational narcissisism because it is unjustifiably changing the subject to something off topic to something you see as less boring because you are not actually paying attention/showing interest in the other person. It is making a conversation completely about you. It is important to only believe things as true with solid evidence and realizing your devaluing inactions/actions to obtain object constancy (the ability for a positive view on others even when you are upset at them) without involving your opinions in it to be assertive.