In fact, I may have been walking out of the room at the time and in close proximity to her. And so at the time when Max was speaking -- I believe that there were people who spoke in between she and Max Pell. But at the time when he stood to speak, I was in the restroom and sort of coming back from the restroom, so I don't really recall exactly what his comments were.
They were using the bathroom when Max got up to speak.  
The context states that ‘at the time when Max was speaking […] I was in the restroom’ The system could likely not understand the sentences as the clauses used to illustrate the speech made it difficult to understand and it was written confusingly. 
( z1 use :ARG0 ( z2 they ) :ARG1 ( z3 bathroom ) :time ( z4 get-up :ARG0 ( z5 person :name ( z6 name :op "Max" ) ) :purpose ( z7 speak :ARG0 z5 ) ) )