But Mr Toledo said he never paid attention to any conversations between them.
Another six witnesses are to follow the third complainant, including a psychologist, Adass teachers and a police investigator. Magistrate Johanna Metcalf will then decide if there is sufficient evidence to commit Ms Leifer to stand trial in a higher court.
Charge sheets allege Ms Leifer committed offences in Elsternwick, Elwood, Frankston and Emerald and in the towns of Blampied and Rawson.
She left Australia for Israel in 2008 when allegations against her emerged. She was charged in 2012 and extradition hearings began in 2014, but she was not extradited to Australia until the start of this year.
If you or anyone you know needs support, you can contact the National Sexual Assault, Domestic and Family Violence Counselling Service on 1800RESPECT (1800 737 732).