Etiquette question

[Stitchfans]

Unless there is an emergency and she needs to stay by the phone, it is rude to answer the phone for "chit chat"

I agree. That would be the only reason I would answer it. If it was an emergency.

 

[NEVERENOUGHWDW]

I think it's fine to pick up the phone but it must be made clear immediately that you have guests & must return the call.
IMHO that's bad manners.