I'm sorry there was a little misunderstanding here but the point of my post is to point out that an explanation should be brief and compact and should not have include anything irrelevant. If you need to explain in a big wall of text, please do so but include the relevant points only and explain briefly.
In my example, the information that was needed are only 3 points but the example clearly indicates irrelevant information such as the status of the relatives. It has nothing to do with the fight nor mechanics and should be omitted.
Humanity in your perspectives relates to us chatting in leisure time, such topics as relatives, what will we have for dinner, how's the dog doing. Please refrain talking about these when you explain fights. It interferes with the relevant information (and thus confusing the new people) and wastes other's time. If you feel like putting a bit of humanity, please do so at the start of the dungeon or when you know you can have a small chit chat between pulls. But not during explanation of the boss mechanic.