Lets imagine that you can’t actually do all of this directly in Twitter Search like this:
(Now contrived) How To follows:
I stumbled upon an impromptu (or so they claim) twitter interview between Jake Tapper (@jaketapper) of ABC and Sen. John McCain (@senjohnmccain). Unfortunately, short of following both of them, it was hard to get a gist of the actual conversation – I tried the Conversation view on Twitter Search, and a couple of other services, like Tweader (appears broken) and Quotably (dead).
Twitter Search has an advanced search/allows parameters to specify searching for tweets from one person to another, but that only gives you half a conversation.
And as far as I can tell, Twitter search doesn’t allow multiple from:/to: pairs. Enter Yahoo Pipes’ union module:
This module merges up to five separate sources of items into a single list of items.
…and this is where I discovered that you could indeed do duplex conversation searches in twitter search, so the rest of this will be short…
See http://pipes.yahoo.com/austegard/twitterconversations; click View Source or Clone to play with it (requires Yahoo id).