can one analyze packets from somewhere else?

hypothetically

one connects to..

lets say, the world of warcraft

just as an example.

would i see that packet? or would it be beyond server side?

e/ let me be more accurate,

if there was a trade window initiated .. whether it's the world of warcraft, or diablo 2..

would the packet see that person, or the server?

This post was edited by spoofdaboss on Feb 12 2017 09:53pm

I'm still a little unsure of the question, but if I initiate a trade with someone I'd imagine that my trade request goes to the server, and then the server sends the other players then accept/deny prompt. Everything is going through the server, but I doubt the other player receives the same packet that I sent.