Wall Street bashers flooded the Internet with outrage over the timing of Goldman Sachs Group Inc ’s upgrade of Tesla Motors Inc this week. Just hours after Goldman upgraded the stock from Neutral to Buy, Tesla announced that Goldman would be teaming with Morgan Stanley on a $2 billion stock offering. Of course, the higher Tesla’s share price at the time of the offering, the better it is for all parties involved. Thus, the conspiracy theories write themselves.Or, Is It Just A Coincidence? According to former Goldman banker Matt Levine, this uncomfortable situation is ironically likely due to Goldman’s strict stance on keeping its bankers and research analysts completely isolated from each other. “The awkward thing about those procedures is that, if bankers never talk to analysts, you will occasionally get a situation where the analysts are upgrading a company at the same time that the bankers are finalizing an investment banking mandate, and the near-simultaneous announcements are embarrassing all around,” Levine wrote. Reuters’ Antony Currie echoed Levine’s cries of coincidence. “In 2016 it is hard to see Goldman, or any other bank, being quite so stupid as to use research this openly to win banking business,” Currie noted. In fact, the seemingly embarrassing timing of the upgrade could be viewed as proof that Goldman’s system of keeping analysts separate from bankers is working. It’s hard to imagine they would have wanted all this negative publicity.