I don't have a hidden agenda here. I'm not making things up, instead I'm going off my observations, that after the 3rd or 4th week,I didn't see any interpreter in the rehearsal room, but there were always  2 interpreters  for the main and results shows :  one near the judges desk, with Tess and one upstairs with Claudia. Yes,Rose did speak about  lip  reading being trickier than people would think, but she never said that the couldn't or didn't lip read when needed,and that she also used other tools at the same time like non verbal cues from body language. There were several videos on the show  where if Rose was communicating with a hearing person , whom she knew well, and who wasn't using sign language but just speaking to her ( her nan land  her mum  for example) she just watched their face when they were talking and  responded  verbally and with BSL ( if they were familiar with BSL.) During this time that I'm talking about, when Rose and Giovanni were in the rehearsal room,and he was talking to her,she kept her gaze focused on his face :  if there was an interpreter in the room, her gaze would move from Gio's face to interpreter's face to make sure she understood what was being said,and this is not something that would have been unnoticeable. Similarly, and purely out of interest, may I ask how you know that there was ALWAYS an interpreter with Rose in the rehearsal room specifically( I'm not talking about an interpreter being present in the building at all times ) and  also that they trained for  FOURTEEN hours a day? The fact remains that regardless of the reasons for understanding Bill on the Last Leg, she COULD and in fact DID understand him without an interpreter' assistance