@ryanhoulihan The unspoken rule which I think is complete nonsense at least regarding new relationships that replying too soon or calling back very quickly somehow indicates you are unfit to be with them (too clingy, too something..).
I rate the urgency of the reply based on a few factors like who they are and the subject matter.
I used to have parents who would call me or message me like someone's dying, only to find out they wanted me to come over and clean up their yard for them.. 🤔 😩