We used to sit down together to the do review. The reviewer set an open timeslot for a possible review, the first who grabs it sits down and together they revie

We used to sit down together to the do review. The reviewer set an open timeslot for a possible review, the first who grabs it sits down and together they review it. The calendar entry helps to timebox the review process, the verbal communication speeds it up and helps to avoid conflict. One more addition, take care of the important bits only, don't fight over coding style or such.