Shapovalov on Nadal: It's a big joke, it's frustrating - where's the line?

The Canadian lost this duel after five sets, and during and after the match, he criticized the umpire Carlos Bernardes.
Shapovalov thought that the umpire should not have allowed Nadal to take so many breaks during the match, and that in addition to medical time-outs, during the same break, he was unfairly allowed to go to the toilet, as he did between the last two sets.