Harbs sends out Koch, then looks at Lamar and asks Lamar if he wants to go for it. Lamar says Hell Yeah, Harbs calls timeout and Sam Koch walks off the field feeling sad. Then says to Harbs... "I just want ONE Punt Coach."
the maximum net yardage you could get on a punt there was 42 yards but likely (as in this case) a net of only 23 yards or so because of the increased likelihood of touchback - so by going for it and not getting it you ultimately lose a maximum of 23 yards vs a high probability punting outcome and a minimum of 17 yards...
at that point thats at most 2 first downs of field position for the opposing team's offence
the other side of it is that if you get it you are almost instantly in position to get points
the browns just did the same thing again just now and it netted them 28 yards off the punt when they could have kept driving