1. It reflects the silence in the house. I don’t know why the guests have not come yet, but the host is still looking forward to it in loneliness. Perhaps this is not only the poet’s true feelings, but also the expression of the poet’s anxious mentality at that time. (It just makes sense)
2. "Xian" means "at leisure, with nothing to do". The word "Xiankiao" here implies that the poet has been bored for a long time, but the friends never come.
(Just make sense)