McQueary called his father from inside the facility and went over to his father's house after speaking with him on the phone and leaving the facility. He never told his father, Dranov, JVP, Schultz or Curley that he saw anything, let alone sexual assault. He told them all he HEARD things which concerned him. Hearing something you think could be be something concerning is not "eyewitnessing" what the Presentment claimed. McQueary himself sent an email to the Prosecutor specifically statating that he absolutely did not SEE what the Presentment claimed he reported he saw - McQueary categorically denied he SAW anthing of the kind and "Never told anyone he did" for Pete's sake - a statement by McQueary that included the Prosecutor, police investigators, JVP, Schultz, Curley or anyone else. Again, his email letter to the Prosecutor, and AG's Office, categorically stated that he (MM) "NEVER told anyone that he SAW" what is claimed he reported he saw in the AG's Presentment.
Speculating about noises you hear and what they might possibly be is not "eyewitnessing" those speculated things. The Presentment made up the claims of MM "eyewitnessing" sexual assault as McQueary himself made clear.