@AB Instagram / Getty Images SEATTLE—Quite a weekend. A trade that wasn’t, a monster trade, a wedding, a contract that is a palindrome, anticipating a poor man’s free-agency period, and wondering what will happen on the most anticipated pro day of this year. You probably needed much of Sunday to digest the Antonio Brown trade. I know I did. So much to unpack, really. Let’s do that here, at the top of the column, and then we’ll get into what could be a frenzied week with free agency kicking off—but it’s a week that I think won’t get the blood boiling the way it normally does. I think of Pittsburgh’s trade of Brown to the Raiders for third-round and fifth-round picks the way I think of a college class. You get the syllabus on day one, with 15 compartmentalized lectures, all of them with tributaries that make the class so involved and complex. With Brown, there are so many angles. The Lead: Brown Trade • Talent always wins. John Elway got trashed as a selfish guy coming out of Stanford in 1983, saying he wouldn’t play for Baltimore. Eli Manning got trashed the same way in 2004 saying he wouldn’t play…