A lot of time is wasted by fielding, throwing to the w/k who then throws it to mid off/on who throws it to the bowler who returns it to the fielder to shine it who ….throw it to the fielders at the bowling end 90% of the time if no run out possibility and speed things up.Test match cricket is different to Shield cricket though, there is a lot more riding on test matches with field and bowling changes.
I would rather see 82 quality test match overs then see test players rushing through to bowl 90/100 overs with Marnus bowling.