if i am polite, it is a sign of masking. when i see two friends interact, or when my friend asks something of me, he just asks, and i give, same with a family member. but if i am overly polite there is a whiff of ulterior motive or of lack of connection or bonding.
that is to say, to be connected is to just be able to communicate without fear of coming across as impolite- true expression. a non-big deal. to not feel like i have to couch what i say with pleasantries.