Citadel Securities' bold forecast that the Federal Reserve will deliver a surprise interest rate hike has Wall Street buzzing—not just for its hawkish economic stance, but for the ironic historical connection it highlights between current Fed Chair Kevin Warsh and former Chair Ben Bernanke.

'Bravo TV for Bond Nerds' The unexpected rate hike call from Citadel Securities has drawn sharp attention to a decade-old central banking rivalry.

In 2011, Warsh famously resigned from the Fed board under then-Chair Bernanke over concerns regarding inflation and easy-money policies.

Today, Bernanke serves as a senior advisor to Citadel, the very firm predicting Warsh will now execute a shock rate hike to assert his own inflation-fighting credibility.

Jeff Park, a partner at ParaFi Capital, highlighted this Wall Street irony on social media.