Well it's odd because a sentence later it is being emphasized that the water must be 190 not 189 or 191. Maybe the kettle was set to 220 as some strange setting

Well it's odd because a sentence later it is being emphasized that the water must be 190 not 189 or 191. Maybe the kettle was set to 220 as some strange setting not relating to the actual temperature of the water? Or maybe being NBA players they have a moon kettle.