I came up in a time where sparring was a pissing contest to demonstrate how good you and your respective school were. Today, such measurement is what formal competition is for.
In terms of learning, the more you can approach sparring sessions with a specific plan, the more you’ll get out of them. Coming in and ‘rolling’ is not training. Productivity-wise it’s pissing in a random direction when windy it’s out and hoping for the best. ;o)
What are you training?
Lastly, stated in the old blog I could tell when athletes have done repetitions and/or specific, intensive drilling. Having no idea if the Mendes Brothers train this way, but here is the precise, compact movement I spoke of (if they do this without drilling all I can say is WOW):