Personal space invaders

I have in laws coming who I find smothering. There is often boring conversation in which I don’t want to engage. Family rules are not to be rude. How do I extract myself from these convos and the invasion of personal physical and mental space yet allow them to be who they are?
C in-laws
T they waffle
F annoyed
A don’t do anything
R can’t see them any other way
C in laws
T they can be who the are
F acceptance
A ?
R they are who they are
What action would help me to accept them exactly as they are and I get to stay sane?