Victorious Millwall boss Alex Neil, like Daniel Farke, was also too engaged with matters on the pitch to hear the chanting from the away end.
The Lions progressed to the next round of the FA Cup with a 2-0 victory at Elland Road.
However, shortly after the game, Leeds issued a statement which condemned chanting by Millwall supporters relating to the murders of Whites fans Kevin Speight and Christopher Loftus before a UEFA Cup semi-final at Galatasaray in 2000.
The statement said: “During today’s tie with Millwall, we were extremely disappointed to hear vile chants relating to football traged...