Andy Robertson and Jurgen Klopp ended up stationed very close to each other for much of the first half at Anfield. Perhaps they knew it was going to be a team effort.
A team effort to ensure that Liverpool's aggression remained controlled in the heat of this boiling pot of a fixture.
A team effort not to get too wound up by Manchester United's desire to slow things down at every opportunity, taking an age over one particular corner at the Kop end after 20 minutes.