What is the word for, when to many things are happening at once?

chaos?

In romeo and juliet (act3 scene 1) how does benvolioconnect the weather to peoples fellings?

http://www.sparknotes.com/shakespeare/romeojuliet/

This site will help you with this.
"As they walk in the street under the boiling sun, Benvolio suggests to Mercutio that they go indoors, fearing that a brawl will be unavoidable should they encounter Capulet men." The reference to the "boiling sun" would be a metaphor for the "boiling tempers" of the men.