Do you often send queries to other agents? For instance, if you got something on your desk and thought, "It's pretty good but not what I do, however Agent Wendigo digs this," would you contact that writer and suggest Agent Wendigo? Would you pass the stuff along to Wendigo yourself (if you knew her)? Similarly, do editors recommend other publishers/editors when you present material to them? "I'm not looking for This Week's Da Vinci Code WannaBe but Editor Chupacabra over at Mystery House would kill to get this."
welllllllllll, sort of. Sometimes I think it's just me, that I don't appreciate the finer aspects of a novel about the archeology of Rabbitania, or the healthful aspects of serial scrubbers, so I get out my trusty list of Snark comrades in arms and refer.
I give the querier the agent's name. I never forward a query myself. For all I know the querier thinks Miss Snark's comrades are all ne'er do wells, and wouldn't want to have their sase sullied by close proximity to, let alone arrival in, their zipcodes.
And no, editors hardly ever say "not me but send it to Kerfluffle and Floozy". They send me deals that need an agent when their own house is buying but if they pass, they don't give me suggestions. As you might guess, that's ok with me.